I ended up by using preamble but im looking for better yml solution 

On Monday, March 28, 2022 at 5:45:17 PM UTC+2 Duy Huy Hoang Do wrote:
How can we use short author name in footer Beamer with multiple author by Pandoc
for now im using thisĀ 
```yml
---
title: "De-virtualization and Re-virtualization of workloads"
author:
- \textbf{Presenter:} Do Duy Huy Hoang$^1$ \newline
- \textbf{Supervisor:} Prof. Boris Teabe$^2$
date: \today{}
institute:
- $^1$CRYPTIS - University of Limoges
- $^2$Toulouse Institute of Computer Science Research
theme:
- Ilmenau
colortheme:
- beaver
mainfont: "SourceSansPro-Regular"
header-includes:
- \usepackage{setspace}
toc:
- true
---
```
2022-03-28_17-44.png

But if the author is too many, it will break the footer



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