Hallway cosplay?

hello, i'm going to anime midwest for my first time this year! soooo excited! but i'm interested in entering the masquerade or any hallway cosplay contest this con might have? i have tried to dig up info on registering for the cosplay contests but i'm abit confused :/ any info about registration for contests and time commitments is much appreciated! and is there any sort of hallway contest? that requires less of a time commitment? its hard to get the hubbsters to agree to give up most of his con saturday standing around backstage in costume thats why i ask :) thanks for any info!