Missing Maximum Desired Number of NPCs in details

I am new to modding ark and i am trying to set up a dino spawn but the “Maximum Desired Number of NPCs” box is missing and i cant do anything to find it or continue working on the spawns. If anyone knows how to fix it or if i messed anything up please let me know, Thanks!

I dont have one either. Just fill in minimum desired. Ofcourse if your dev kit is anything like mine, even if I put 200 as minimum, it will only spawn like 50 or so…I dont understand it.:confused: