You would need to have a single person FP to search. So for example, if you all have the same FP go in and adjust time. Then uncheck all but one person and change the one person to an overlapping but different time. That way if you don't find something they can still ride with you but it allows you to search for a single fast pass for something else. If you can find multiple overlaps you can search multiple singles and slowly replace.
I search multiple times everyday since I have at least one person with a single FP in our group just to see what's out there. I have seen usually 0-2 come up in my searches everyday for A&E and SDMT but I would say I see SDMT less in my searches. If you see a less than optimal time get it anyway and keep searching to see if a replacement time comes up or post to trade.
Best of luck to everyone. I recently had to try to get my son an A&E that overlapped with my DD(he didn't have one originally). After searching I found a late night one in the morning and by that afternoon I found an over lapping time (we leave in about 2 weeks). It can be done but it's endless searching and dumb luck!