Computer Hope

I started my first group the other day. I can't find the automatically approve members based on geographic location (radius) option in admin assistant criteria that I had on there a few days ago. It's VANISHED. Only the account age option is available? This is frustrating because people have to wait until I accept them until I resolve this issue. This question is urgent for me, so I need any advice please. Even if you don't think you have the right answer or solution please comment. What do I do? I only have 20 members so far. Thanks.