I am creating a slide template for a presentation in LaTex using Beamer and i want to add some more information "Supervised by " between "Directed by " and "the institue" , so i put
\documentclass{beamer}
\usetheme{CambridgeUS} % theme
\title[Project's name]{Project 's name }
\author[My name]{\textbf {Directed by: my name}} % auteur
\institute[Rouen University]{\textbf {Rouen University}}
\date{20 july 2012}
\titlegraphic{\includegraphics[width=2cm]{logo_ur.jpg}}
\begin{document}
\begin{frame}
\maketitle
\end{frame}
\end{document}
the result is given by this picture :

and i want something like this :


