go to public match and edit your class you will have 17 slots to. Players have the ability to change any aspect of the 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. [HOST] › watch. Go to match. The Create-A-Class Pick 10 system can be modified to allow players to choose from 3 to 17 items. 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. . " Select, "Edit Game Rules". 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. Then go to "Setup Game. Go all the way down to "Custom Classes" and on "Selection. Call of Duty: Black Ops II Glitches · Patched Custom Class Slot Glitch 6.