Many of the F3 and Filter options have been taking a back seat (maybe behind the rumble seat) over the last few years. Even being able to find those with a Schedule C have had problems. 

A seldom used and very archaic Custom Filter in Screen 1 seems to still work. If the Organizer type is not working, you could consider using this as a tag for searching. Personally i would just send the same organizer type to each client. They either look at them or they don't