# Change header title in beamer

I'm preparing a presentation with three parts. I use Antibes theme. I want to change the title of the presentation that appears in each frame by the title of the part, and then the sections and subsections. Now I have, in frames header:

Title of the presentation
Section
Subsection

And I want

Title of the part
Section
Subsection

• Welcome to TeX.SX! You can help us to help you by providing the code for a small document that shows your setup, including the theme you use. Just edit your question and add the code. – samcarter is at topanswers.xyz Oct 28 '16 at 13:01
• If you don't know how to provide a minimal working example, look here. – CarLaTeX Oct 29 '16 at 9:47

If you redefine the headline template, you can replace \insertshorttitle with \insertpart:

\documentclass{beamer}

\usetheme{Antibes}

\makeatletter
\end{beamercolorbox}
\begin{beamercolorbox}[wd=\paperwidth,ht=2.5ex,dp=1.125ex,%
\insertpart
%      \insertshorttitle
\end{beamercolorbox}
\begin{beamercolorbox}[wd=\paperwidth,ht=2.5ex,dp=1.125ex,%
\ifbeamer@tree@showhooks
\ifdim\wd\beamer@tempbox>1pt%
\hskip2pt\raise1.9pt\hbox{\vrule width0.4pt height1.875ex\vrule width 5pt height0.4pt}%
\hskip1pt%
\fi%
\else%
\hskip6pt%
\fi%
\end{beamercolorbox}
\begin{beamercolorbox}[wd=\paperwidth,ht=2.5ex,dp=1.125ex,%
\ifbeamer@tree@showhooks
\ifdim\wd\beamer@tempbox>1pt%
\hskip9.4pt\raise1.9pt\hbox{\vrule width0.4pt height1.875ex\vrule width 5pt height0.4pt}%
\hskip1pt%
\fi%
\else%
\hskip12pt%
\fi%
\end{beamercolorbox}
\end{beamercolorbox}
}

\makeatother

\title{title}
\begin{document}

\part{part}
\section{section}
\subsection{subsection}
\begin{frame}
abc
\end{frame}

\end{document}