Alright, congratulations to be able to upgrade to the new releases.
Were you successful in connecting the computers?
In order to set up privileges (we call it ACL’s - Access Control List) in OpenEMR, use this link and this link
I’ll recommend you create a dummy user for this purpose. Once you’re satisfied, then you translate them to actual users.
You can always come back if something is unclear to you from the link provided.