I would like to know where do I find the domain and server adress to put here.
I'm new at this so be kind with me.
I just bought a workcenter 6515
the printer is connected to my computer via ethernet
I have windows 10
I'm at a bit of a loss, you really should not be attempting to setup Network logins if you do not have a network server to use, and if you do, you really should knows its network information. You are at that point looking to add an Active Directory Server.
Without you being able to know 100% what the right settings are, all you will achieve is losing the ability to log into the printer at all.