\documentclass{article}

\usepackage[a4paper, landscape]{geometry}

\usepackage{formationTitle}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{enumerate}
\usepackage{numprint}
\usepackage{graphicx}

\newenvironment{boxed}
{
	\begin{center}
		\begin{tabular}{|p{.95\textwidth}|}
		\hline\\
		}
		{
		\\\\\hline
		\end{tabular}
	\end{center}
}

\context{Super society}
\title{Formation plan}
\subject{My wonderful formation}
\author{Gregory Trolliet}
\supervisor{Jean Dupont}
\logo{logo.pdf}
\objectives{\textbf{Objectives}
\begin{itemize}
\item[] Objective n$^{\circ}$1
\item[] Objective n$^{\circ}$2
\end{itemize}
}
\messages{\textbf{Messages}
\begin{itemize}
\item[] Message n$^{\circ}$1
\item[] Message n$^{\circ}$2
\end{itemize}
}
\begin{document}

\maketitle
\steptable{
10h00 (5') &
Welcome &
Lecture style &
Orally &
-- \\
\hline
10h05 (5') &
Organization presentation &
Lecture style &
Orally &
-- \\
}

\end{document}