Can't log in to PCs with local user because of Entra ID

[batman]

We have about 30 PCs in one classroom and everything works great with Veyon apart from logging in simultaneously to all PCs with one local administrator. I can log in manually to each PC, but I have to press "Other user" first because of the last logged in Entra user profile.

When I use the "Log in" function and enter the login credentials, Veyon tries to access the last logged in Entra user profile with the local admin password. I've tried to use:

• admin
• .\admin
• PC_NAME\admin

But no luck. Any ideas how to make it work?