I'm creating a presentation with beamer and I would like to have the following:

1. navigation symbols vertically organized and
2. show not all navigation symbols, but only some

I can either achieve 1. or 2., but not both.

\documentclass{beamer}

\begin{document}

\begin{frame}
\frametitle{Test frame}
foo
\end{frame}

\end{document}


Only some navigation symbols, but horizontal:

\documentclass{beamer}

\begin{document}

\begin{frame}
\frametitle{Test frame}
foo
\end{frame}

\end{document}


If I write \setbeamertemplate{navigation symbols}[vertical]{\insertframenavigationsymbol \insertsectionnavigationsymbol \insertbackfindforwardnavigationsymbol}, I get an error message (Missing \begin{document})

So what do I have to do to have, say only three navigation symbols vertically aligned?

Thanks.

I will translate what is written here: http://mcclinews.free.fr/latex/introbeamer/elements_navigation.html

Both are not compatible. Then to choose your symbols to put vertically, you have to type this:

\setbeamertemplate{navigation symbols}
{%
\vbox{%