Why can't I change or toggle the “Search My Briefs” checkbox?

The “Search My Briefs” checkbox allows you to include or exclude your personal briefs during a search of a larger category. The only time you cannot make changes to this checkbox is when you select the “My Briefs” category radio button. By selecting the “My Briefs” category radio button you have already instructed the system to ONLY perform a search of the “My Briefs” database.

Briefs Search Panel Annotated
Main Briefs Search Panel Annotated