r/blackops2 is a community dedicated to Call Of Duty: Black Ops 2 where. . The Extra Slots Pack increases the number of customizable Create-A-Class sets to 10 and expands media storage, allowing players to archive 20 more emblems. votes, 88 comments. 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? Black Ops II Create a Class 17 Slots Glitch Exploit Online MP Tutorial. 25K subscribers in the blackops2 community. [HOST]?v=vHBccaYtLzQ&hd=1.