how to make field editable for specific user

We are trying to make Recruiting Type fields editable for specific user even when the requisition is already posted and user is not part of hiring team.

Navigation:
Hiring > Job Requisition > Select Posted one > Details > Requisition Structure (for Recruiting Type field)

We tried Page Composer with EL expression:
#{!securityContext.userInRole['TEST_SUPERUSER_ORC’] }

Result:
It became editable for the user when opening a posted requisition
However, it became Read only even when Creating Job Requisition - which needs to be editable