" Select, "Edit Game Rules". [HOST] › watch. Go to match. Go all the way down to "Custom Classes" and on "Selection. Players have the ability to change any aspect of the game. Then go to "Setup Game. The Create-A-Class Pick 10 system can be modified to allow players to choose from 3 to 17 items. . go to public match and edit your class you will have 17 slots to. For Call of Duty: Black Ops II on the Xbox , a GameFAQs message board topic titled "Ummm how do I have 17 usable slots in Create a Class? Start a custom game. oooooVOIDooooo this is the right command, do it while in the menu and then click create a class and you'll see you'll have 17 slots. Call of Duty: Black Ops II Glitches · Patched Custom Class Slot Glitch 6. this glitch lets you have 17 choices for your custom class 1:Have your friend host a lobby 2:have him go to private match, edit game rules.