By default sub and sub-sub categories will display on member's profiles, once these have been selected by the member in the Additional Details form:
In order to display only the sub-sub categories navigate to Settings - Advanced Settings. Search for the setting with the name: show_subs_member_profile and turn this setting On
Once the setting is On, member profiles will show up like this
Only Sub-Sub categories will show up in the Specialties tab.
