Theses are the steps I read off someone else's post.
The problem i am having is the steps 6-8.
Can someone please give a little advice.

1. Have A Friend Invite You To A Private Match

2. Have Them Load Your Custom Gamemode In Private Match

3. Have Them Leave The Game

4. Go Into Private Match And Hover Over The Mode You Had Them Load Up

5. Start UDP Unicorn And Load Your Gamemode And Quickly Go Into An Online Match And Stop The Program

6. It Will Say "Custom Gamemode Loaded"

7. Be Host

8. Defuse And Plant Over And Over Again