Esteem

Hello everyone, I’m new to the Edge community and I thought I’ll give this a shot. I recently bought a used 2012 Edge Limited and after getting it home noticed that the 3rd brake light is not quite right in its place. I tried pushing it up...not hard but seems to not want to budge. Can anyone tell me how they are assembled so I can re-install the 3rd light properly and or replace if needed. Thank you. I’ve tried google and you tube but nothing for 2nd gen.