Voici une solution
solution :
\documentclass{yathesis}
\usepackage{lmodern}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
%
\expression{universitydepartment}{Laboratoire de recherche}{University Department}
\expression{professor}{ingénieur}{engineer}
\expression{mcf}{maître de conférence}{professor}
\begin{document}
\title{Foo}
\author{my}{name}
\supervisor{bla bla}{bla}
\comonitor{foor}{faaat}
\referee[professor, affiliation=...]{nom}{prenom}
\examiner[mcf, affiliation=...]{nom}{prenom}
\maketitle
\makelaboratory
\end{document}
