Reinstall a Cluster

Hello,

I have a question. Is it possible that i can reinstall a Cluster on Linux/Windows? I have a someone who is using my Proxmox VE Interface as a PVEUser. So he can Start,restart,stop the vServer. He asked me to reinstall the Server for his own. Everytime he wants to reinstall it, i have to do it with my Admin Account.

So is it possible to reinstall (Format C: and install the vServer again with same OS) a vServer for his own?