Installing updates on multiple Webmin at once

Webmin
1
SYSTEM INFORMATION
OS type and version Ubuntu 20.04
Webmin version 2.102

I am wondering if i whit help of webmin can upgrade software package over different webmin installation from one single location or do i need to sign in to every different webmin installation to do that?

2

I think Cluster does that. Never used it as I only have one server
https://doxfer.webmin.com/Webmin/Cluster_Webmin_Servers

3

I have only found that it refresh the package list. But do it upgrade to.

4

No idea sorry.