Need to do a selective join

I have created a multi table join and need to join just one more table, please see attachment. I have commented out the table I that is creating the problem. In a nutshell I just want to jjoin each row in the top select with correct row in the bottom table select. But I can't get a unique join, so it's returning two rows becaise band_id and Security_level id have two matches. What I need is to join the top select with the bottom table where band_id and security_level_id (top select) =  band_id and security_level_id (bottom select). I guess this is another level select but just don't know the syntax