Disable The Personal Profiles Form
1.As System Administrator Navigate to Security->Responsibility->Define.
2. Query up the responsibility assigned to the user .
3. Navigate to the Menu Exclusions tab.
4. In the type field choose "Function" and in the name choose "Profile User Values" FND_FNDPOMSV.
5. Save the changes.
6. Exit and enter the application again as the responsibility just modified.
7. Now you will see the Edit -> Preferences -> Profiles dimmed.