I don't think it's perfect, but I hope it helps.
Good luck on anyone wanting to do this project with the full members.
CHapters
00:00 intro
00:20 1st chorus
00:40 group 1 1st verse
1:00 group 2 2nd chorus
1:20 group 3 2nd verse
1:40: group 4 3rd chorus
2:00 group 5 dance break
2:20 group 6 3rd verse
2:40 4th chorus
3:00 final chorus