XF 1.2 Required user fields on sign up

So here is a question is there a way to require users to fill out parts of there profile when signing up. Sounds stupid but I have never had this issue but lately we have had a lot of users signing up but giving NOTHING when it comes to their profile. A little info required might also help weed out spammers as we are approving all users currently.
Can you give me a general idea in what area of the admin area i can find that. Sorry swamped at work and having one of my moderators do it for me who is not familiar with the process. I myself would have to login and mess around with it.