Currently, when a user PowerApps in with my name, the system looks up the 'Full Name' to match the current user, and then displays that name in columns such as 'Assign,' 'Principal,' etc as value.
Lookup(‘DHS Student Users’, ‘Full Name’=User().FullName, ‘Advisor Assign’)
that’s which will shown as name in Advisor Assign from match full name is based on user