Forge help

So, since I felt like playing around in forge, i decided to start remaking Dust 2 from Counter Strike, some of you may be familiar with it, along with this i made an assault gametype called “CS Comp”
I can start up dust 2 with the assault gametype in forge but when i go into custom games i can only select slayer, juggernaut or infection, which is a big problem because i want to test my map and play it with people, if you can, all help will be appreciated.

and just incase anybody was wondering, ive finished A site and im working on long including pit and bedroom, short and CT will be done after.

You have to make it compatible with it. I had this problem in halo reach.
make sure you have to spawn points set up for assault and the two teams as well as the bomb being set up for it as well. if you need help about it, send me a friends request and I will help you out when I get on tonight.