\documentclass[12pt]{scrartcl}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}

\newcommand{\YourTitle}[1]{\begin{center}\Large{\textbf{#1}}\end{center}}
\newcommand{\YourAuthors}[1]{\begin{center} #1 \end{center}}
\newcommand{\YourUniversities}[1]{\begin{center} #1 \end{center}}

\begin{document}


\YourTitle{Title of the Presentation}
\YourAuthors{Presenting Author$^{1}$, Coauthors$^{2}$}
\YourUniversities{$^{1}$ University\\
  $^{2}$ another university}

\noindent 
If you use references to equations (\ref{author:eq:1}) or citations
\cite{author:ref:1}, please start your labels with ``author:'', where ``author''
denotes the family name of the presenting author. Here is the equation:
\begin{equation}
  \label{author:eq:1}
  1 + 1 = 2.
\end{equation}


\begin{thebibliography}{9}
\bibitem{author:ref:1}
  Authors: Title. Journal, number (year), pages.
\end{thebibliography}


\end{document}