We also have similar requirement. So we logged an SR with Oracle. We got response as
No but there is an enhancement request
OER does not provide the ability to enforce assignment of specific asset tabs to specific users/roles.
True need to file enhancement request
Oracle® Fusion Middleware Configuration Guide for Oracle Enterprise Repository
11g Release 1 (11.1.1)
Part Number E16580-04
10309159 - TAB LEVEL SECURITY - AUTHORISATION
If I give a user with Tester Role and a user with Lead Developer Role
approval capability (ie. Tester Role should only approve "Testing" tab and
Lead Developer Role should only approve "Technical" tab). They should only
be able to see the other tabs but not approve anything. e.g. the Lead
developer should only approve the "Technical" tab.