\documentclass{beamer}
\usetheme[numbering=progressbar]{focus}
%\definecolor{main}{RGB}{83, 31, 117}
%\definecolor{textcolor}{RGB}{0, 0, 0}
%\definecolor{background}{RGB}{215, 212, 227}

\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usepackage{listings}
\usetikzlibrary{positioning}
\usetikzlibrary{shapes,arrows}

\author{\small{\input{../includes/authors.txt}}}
\title{Cerebrate}
\subtitle{Community management and tool orchestration the open-source way}
\institute{Cerebrate Project}
\titlegraphic{\includegraphics[scale=0.15]{pictures/logo.png}\linebreak\includegraphics[scale=0.6]{pictures/FIRSTCON22-Speaker-Horizontal.png}}
\date{FIRSTCON22}

\begin{document}
\include{content}
\end{document}