diff --git a/src/Controller/SharingGroupsController.php b/src/Controller/SharingGroupsController.php
new file mode 100644
index 0000000..4b89034
--- /dev/null
+++ b/src/Controller/SharingGroupsController.php
@@ -0,0 +1,163 @@
+<?php
+namespace App\Controller;
+
+use App\Controller\AppController;
+use Cake\Utility\Hash;
+use Cake\Utility\Text;
+use \Cake\Database\Expression\QueryExpression;
+use Cake\Error\Debugger;
+
+class SharingGroupsController extends AppController
+{
+    public function index()
+    {
+        $this->CRUD->index([
+            'contain' => ['SharingGroupOrgs', 'Organisations', 'Users'],
+            'filters' => ['uuid', 'description', 'releasability', 'Organisations.name', 'Organisations.uuid']
+        ]);
+        if ($this->ParamHandler->isRest()) {
+            return $this->restResponsePayload;
+        }
+        $this->set('metaGroup', 'Trust Circles');
+    }
+
+    public function add()
+    {
+        $this->CRUD->add([
+            'override' => [
+                'user_id' => $this->ACL->getUser()['id']
+            ]
+        ]);
+        $dropdownData = [
+            'organisation' => $this->SharingGroups->Organisations->find('list', [
+                'sort' => ['name' => 'asc'],
+                'conditions' => [
+                    'id IN' => array_values(\Cake\Utility\Hash::extract($this->ACL->getUser(), 'individual.organisations.{n}.id'))
+                ]
+            ])
+        ];
+        if ($this->ParamHandler->isRest()) {
+            return $this->restResponsePayload;
+        }
+        $this->set(compact('dropdownData'));
+        $this->set('metaGroup', 'Trust Circles');
+    }
+
+    public function view($id)
+    {
+        $this->CRUD->view($id, [
+            'contain' => ['SharingGroupOrgs', 'Organisations', 'Users']
+        ]);
+        if ($this->ParamHandler->isRest()) {
+            return $this->restResponsePayload;
+        }
+        $this->set('metaGroup', 'Trust Circles');
+    }
+
+    public function edit($id = false)
+    {
+        $this->CRUD->edit($id);
+        if ($this->ParamHandler->isRest()) {
+            return $this->restResponsePayload;
+        }
+        $dropdownData = [
+            'organisation' => $this->SharingGroups->Organisations->find('list', [
+                'sort' => ['name' => 'asc'],
+                'conditions' => [
+                    'id IN' => array_values(\Cake\Utility\Hash::extract($this->ACL->getUser(), 'individual.organisations.{n}.id'))
+                ]
+            ])
+        ];
+        $this->set(compact('dropdownData'));
+        $this->set('metaGroup', 'Trust Circles');
+        $this->render('add');
+    }
+
+    public function delete($id)
+    {
+        $this->CRUD->delete($id);
+        if ($this->ParamHandler->isRest()) {
+            return $this->restResponsePayload;
+        }
+        $this->set('metaGroup', 'Trust Circles');
+    }
+
+    public function addOrg($id)
+    {
+        $sharingGroup = $this->SharingGroups->get($id, [
+            'contain' => 'SharingGroupOrgs'
+        ]);
+        $conditions = [];
+        $containedOrgIds = array_values(\Cake\Utility\Hash::extract($sharingGroup, 'sharing_group_orgs.{n}.id'));
+        if (!empty($containedOrgIds)) {
+            $conditions = [
+                'NOT' => [
+                    'id IN' => $containedOrgIds
+                ]
+            ];
+        }
+        $dropdownData = [
+            'organisation' => $this->SharingGroups->Organisations->find('list', [
+                'sort' => ['name' => 'asc'],
+                'conditions' => $conditions
+            ])
+        ];
+        if ($this->request->is('post')) {
+            $input = $this->request->getData();
+            if (empty($input['organisation_id'])) {
+                throw new InvalidArgumentException(__('No organisation IDs passed.'));
+            }
+            if (!is_array($input['organisation_id'])) {
+                $input['organisation_id'] = [$input['organisation_id']];
+            }
+            $result = true;
+            foreach ($input['organisation_id'] as $org_id) {
+                $org = $this->SharingGroups->SharingGroupOrgs->get($org_id);
+                $result &= (bool)$this->SharingGroups->SharingGroupOrgs->link($sharingGroup, [$org]);
+            }
+            if ($result) {
+                $message = __('Organisation(s) added to the sharing group.');
+            } else {
+                $message = __('Organisation(s) could not be added to the sharing group.');
+            }
+            if ($this->ParamHandler->isRest()) {
+                if ($result) {
+                    $this->RestResponse->saveSuccessResponse('SharingGroups', 'addOrg', $id, 'json', $message);
+                } else {
+                    $this->RestResponse->saveFailResponse('SharingGroups', 'addOrg', $id, $message, 'json');
+                }
+            } else {
+                if ($result) {
+                    $this->Flash->success($message);
+                } else {
+                    $this->Flash->error($message);
+                }
+                $this->redirect(['action' => 'view', $id]);
+            }
+        }
+        $this->set(compact('dropdownData'));
+    }
+
+    public function removeOrg($id)
+    {
+
+    }
+
+    public function listOrgs($id)
+    {
+        $sharingGroup = $this->SharingGroups->get($id, [
+            'contain' => 'SharingGroupOrgs'
+        ]);
+        $params = $this->ParamHandler->harvestParams(['quickFilter']);
+        if (!empty($params['quickFilter'])) {
+            foreach ($sharingGroup['sharing_group_orgs'] as $k => $org) {
+                if (strpos($org['name'], $params['quickFilter']) === false) {
+                    unset($sharingGroup['sharing_group_orgs'][$k]);
+                }
+            }
+            $sharingGroup['sharing_group_orgs'] = array_values($sharingGroup['sharing_group_orgs']);
+        }
+        $this->set('sharing_group_id', $id);
+        $this->set('sharing_group_orgs', $sharingGroup['sharing_group_orgs']);
+    }
+}
diff --git a/src/Model/Entity/SharingGroup.php b/src/Model/Entity/SharingGroup.php
new file mode 100644
index 0000000..e69de29
diff --git a/src/Model/Table/SharingGroupsTable.php b/src/Model/Table/SharingGroupsTable.php
new file mode 100644
index 0000000..7204dec
--- /dev/null
+++ b/src/Model/Table/SharingGroupsTable.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace App\Model\Table;
+
+use App\Model\Table\AppTable;
+use Cake\ORM\Table;
+use Cake\Validation\Validator;
+use Cake\ORM\RulesChecker;
+use Cake\ORM\TableRegistry;
+
+class SharingGroupsTable extends AppTable
+{
+    public function initialize(array $config): void
+    {
+        parent::initialize($config);
+        $this->addBehavior('UUID');
+        $this->belongsTo(
+            'Users'
+        );
+        $this->belongsTo(
+            'Organisations'
+        );
+        $this->belongsToMany(
+            'SharingGroupOrgs',
+            [
+                'className' => 'Organisations',
+                'joinTable' => 'sgo',
+                'foreignKey' => 'sharing_group_id',
+                'targetForeignKey' => 'organisation_id'
+            ]
+        );
+        $this->setDisplayField('name');
+    }
+
+    public function validationDefault(Validator $validator): Validator
+    {
+        $validator
+            ->requirePresence(['name', 'releasability'], 'create');
+        return $validator;
+    }
+
+    public function buildRules(RulesChecker $rules): RulesChecker
+    {
+        return $rules;
+    }
+}
diff --git a/templates/SharingGroups/add.php b/templates/SharingGroups/add.php
new file mode 100644
index 0000000..5b3e413
--- /dev/null
+++ b/templates/SharingGroups/add.php
@@ -0,0 +1,41 @@
+<?php
+    echo $this->element('genericElements/Form/genericForm', array(
+        'data' => array(
+            'description' => __('Sharing groups are distribution lists usable by tools that can exchange information with a list of trusted partners. Create recurring or ad hoc sharing groups and share them with the members of the sharing group.'),
+            'model' => 'Organisations',
+            'fields' => array(
+                array(
+                    'field' => 'name'
+                ),
+                [
+                    'field' => 'organisation_id',
+                    'type' => 'dropdown',
+                    'label' => __('Owner organisation'),
+                    'options' => $dropdownData['organisation']
+                ],
+                array(
+                    'field' => 'releasability',
+                    'type' => 'textarea'
+                ),
+                array(
+                    'field' => 'description',
+                    'type' => 'textarea'
+                ),
+                array(
+                    'field' => 'uuid',
+                    'label' => 'UUID',
+                    'type' => 'uuid'
+                ),
+                array(
+                    'field' => 'active',
+                    'type' => 'checkbox',
+                    'default' => 1
+                )
+            ),
+            'submit' => array(
+                'action' => $this->request->getParam('action')
+            )
+        )
+    ));
+?>
+</div>
diff --git a/templates/SharingGroups/add_org.php b/templates/SharingGroups/add_org.php
new file mode 100644
index 0000000..24b89c2
--- /dev/null
+++ b/templates/SharingGroups/add_org.php
@@ -0,0 +1,19 @@
+<?php
+    echo $this->element('genericElements/Form/genericForm', [
+        'data' => [
+            'model' => 'SharingGroups',
+            'fields' => [
+                [
+                    'field' => 'organisation_id',
+                    'type' => 'dropdown',
+                    'label' => __('Owner organisation'),
+                    'options' => $dropdownData['organisation']
+                ],
+            ],
+            'submit' => [
+                'action' => $this->request->getParam('action')
+            ]
+        ]
+    ]);
+?>
+</div>
diff --git a/templates/SharingGroups/index.php b/templates/SharingGroups/index.php
new file mode 100644
index 0000000..f862aff
--- /dev/null
+++ b/templates/SharingGroups/index.php
@@ -0,0 +1,77 @@
+<?php
+echo $this->element('genericElements/IndexTable/index_table', [
+    'data' => [
+        'data' => $data,
+        'top_bar' => [
+            'pull' => 'right',
+            'children' => [
+                [
+                    'type' => 'simple',
+                    'children' => [
+                        'data' => [
+                            'type' => 'simple',
+                            'text' => __('Add sharing group'),
+                            'class' => 'btn btn-primary',
+                            'popover_url' => '/SharingGroups/add'
+                        ]
+                    ]
+                ],
+                [
+                    'type' => 'search',
+                    'button' => __('Filter'),
+                    'placeholder' => __('Enter value to search'),
+                    'data' => '',
+                    'searchKey' => 'value'
+                ]
+            ]
+        ],
+        'fields' => [
+            [
+                'name' => '#',
+                'sort' => 'id',
+                'class' => 'short',
+                'data_path' => 'id',
+            ],
+            [
+                'name' => __('Name'),
+                'class' => 'short',
+                'data_path' => 'name',
+            ],
+            [
+                'name' => __('UUID'),
+                'sort' => 'uuid',
+                'class' => 'short',
+                'data_path' => 'uuid',
+            ],
+            [
+                'name' => __('Members'),
+                'data_path' => 'alignments',
+                'element' =>  'count_summary',
+                'url' => '/sharingGroups/view/{{id}}',
+                'url_data_path' => 'id'
+            ]
+        ],
+        'title' => __('Sharing Groups Index'),
+        'description' => __('Sharing groups are distribution lists usable by tools that can exchange information with a list of trusted partners. Create recurring or ad hoc sharing groups and share them with the members of the sharing group.'),
+        'pull' => 'right',
+        'actions' => [
+            [
+                'url' => '/sharingGroups/view',
+                'url_params_data_paths' => ['id'],
+                'icon' => 'eye'
+            ],
+            [
+                'onclick' => 'populateAndLoadModal(\'/sharingGroups/edit/[onclick_params_data_path]\');',
+                'onclick_params_data_path' => 'id',
+                'icon' => 'edit'
+            ],
+            [
+                'onclick' => 'populateAndLoadModal(\'/sharingGroups/delete/[onclick_params_data_path]\');',
+                'onclick_params_data_path' => 'id',
+                'icon' => 'trash'
+            ]
+        ]
+    ]
+]);
+echo '</div>';
+?>
diff --git a/templates/SharingGroups/list_orgs.php b/templates/SharingGroups/list_orgs.php
new file mode 100644
index 0000000..0862276
--- /dev/null
+++ b/templates/SharingGroups/list_orgs.php
@@ -0,0 +1,64 @@
+<?php
+echo $this->element('genericElements/IndexTable/index_table', [
+    'data' => [
+        'data' => $sharing_group_orgs,
+        'skip_pagination' => 1,
+        'top_bar' => [
+            'pull' => 'right',
+            'children' => [
+                [
+                    'type' => 'simple',
+                    'children' => [
+                        'data' => [
+                            'type' => 'simple',
+                            'text' => __('Add member'),
+                            'class' => 'btn btn-primary',
+                            'popover_url' => '/sharingGroups/addOrg/' . h($sharing_group_id)
+                        ]
+                    ]
+                ],
+                [
+                    'type' => 'search',
+                    'button' => __('Filter'),
+                    'placeholder' => __('Enter value to search'),
+                    'data' => '',
+                    'searchKey' => 'value'
+                ]
+            ]
+        ],
+        'fields' => [
+            [
+                'name' => '#',
+                'sort' => 'id',
+                'class' => 'short',
+                'data_path' => 'id',
+            ],
+            [
+                'name' => __('Name'),
+                'class' => 'short',
+                'data_path' => 'name',
+            ],
+            [
+                'name' => __('UUID'),
+                'sort' => 'uuid',
+                'class' => 'short',
+                'data_path' => 'uuid',
+            ]
+        ],
+        'pull' => 'right',
+        'actions' => [
+            [
+                'url' => '/organisations/view',
+                'url_params_data_paths' => ['id'],
+                'icon' => 'eye'
+            ],
+            [
+                'onclick' => 'populateAndLoadModal(\'/sharingGroups/removeOrg/' . h($sharing_group_id) . '/[onclick_params_data_path]\');',
+                'onclick_params_data_path' => 'id',
+                'icon' => 'trash'
+            ]
+        ]
+    ]
+]);
+echo '</div>';
+?>
diff --git a/templates/SharingGroups/view.php b/templates/SharingGroups/view.php
new file mode 100644
index 0000000..84ab096
--- /dev/null
+++ b/templates/SharingGroups/view.php
@@ -0,0 +1,52 @@
+<?php
+echo $this->element(
+    '/genericElements/SingleViews/single_view',
+    [
+        'data' => $entity,
+        'fields' => [
+            [
+                'key' => __('ID'),
+                'path' => 'id'
+            ],
+            [
+                'key' => __('UUID'),
+                'path' => 'uuid'
+            ],
+            [
+                'key' => __('Name'),
+                'path' => 'name'
+            ],
+            [
+                'key' => __('Organisation'),
+                'path' => 'organisation.name',
+                'url' => '/organisations/view/{{0}}',
+                'url_vars' => 'organisation.id'
+            ],
+            [
+                'key' => __('Releasability'),
+                'path' => 'releasability'
+            ],
+            [
+                'key' => __('Description'),
+                'path' => 'description'
+            ],
+            [
+                'key' => __('Active'),
+                'path' => 'active',
+                'type' => 'boolean'
+            ],
+            [
+                'key' => __('local'),
+                'path' => 'local',
+                'type' => 'boolean'
+            ]
+        ],
+        'children' => [
+            [
+                'url' => '/sharingGroups/listOrgs/{{0}}',
+                'url_params' => ['id'],
+                'title' => __('Organisations')
+            ]
+        ]
+    ]
+);