Adding users to client VMs and adding to Sudo Group
1) Log in to VM as root (from proxmox shell or ssh as root)
2)
adduser <username>Enter password twice and then leave the rest of the fields blank
3) Add the User to the Sudo group
usermod -aG sudo <username>Usermod - modifies user account
-aG - adds user to the group
sudo - group name we are adding to
4) Verify by switching to the newly created user
su - <username>
Sources:
https://www.cloudpanel.io/tutorial/how-to-add-user-to-sudoers-in-debian/