\documentclass{presIPGP}
\usepackage[utf8]{inputenc}
\hypersetup{colorlinks=true,urlcolor=blue,linkcolor=white}
\usepackage[english,french]{babel}
\usepackage{lipsum,eurosym}
\begin{document}
\selectlanguage{french}
\title[\bfseries Titre court]{\bfseries\textcolor{white}{Titre de la présentation}}
\author{Auteur1 et Auteur2}
%\date{10 mai 2023}
\date{\today}
\begin{frame}
\thispagestyle{empty}
\titlepage
\vfill
%\centerline{\includegraphics[width=.4\textwidth]{Imgs/IPGP_OBSERA.png}}
%\centerline{\includegraphics[width=.3\textwidth]{Imgs/IPGP_OVPF.png}}
%\centerline{\includegraphics[width=.4\textwidth]{Imgs/IPGP_OVSG.png}}
%\centerline{\includegraphics[width=.4\textwidth]{Imgs/IPGP_OVSM.png}}
%\centerline{\includegraphics[width=.4\textwidth]{Imgs/IPGP_OVS.png}}
%\centerline{\includegraphics[width=.6\textwidth]{Imgs/IPGP_UPC_CNRS_OVFP.pdf}}
%\centerline{\includegraphics[width=.6\textwidth]{Imgs/IPGP_UPC_CNRS_OVSG.pdf}}
%\centerline{\includegraphics[width=.6\textwidth]{Imgs/IPGP_UPC_CNRS_OVSM.pdf}}
%\centerline{\includegraphics[width=.5\textwidth]{Imgs/IPGP_UPC_CNRS.pdf}}
%\centerline{\includegraphics[width=.7\textwidth]{Imgs/IPGP_UPC_CNRS_UR_IGN.pdf}}
\centerline{\includegraphics[width=.4\textwidth]{Imgs/IPGP_UPC.png}}
\end{frame}
\begin{frame}
\frametitle{Plan}
Plan de la présentation :
\begin{enumerate}
\item Introduction
\item Développement
\item Conclusion
\end{enumerate}
\end{frame}
\section{Première section}
\subsection{Première subsection}
\begin{frame}
\frametitle{Un autre frametitle}
\begin{minipage}{0.68\linewidth}
\parskip 10pt
\lipsum[1][1-5]
\lipsum[1][5-9]
\end{minipage}
\hfill
\begin{minipage}{0.28\linewidth}
\includegraphics[width=\linewidth]{Imgs/IdF2019compact.png}
\end{minipage}
\end{frame}
\subsection{Deuxième subsection}
\begin{frame}
\frametitle{}
The end.
\end{frame}
\end{document}
