Can I change from Undeclared to Biology?

I was put into undeclared after being told that my intended major (engineering ) was capped. I was wondering if I could change my major from Undeclared to Biology, human biology in specific. Is this major capped? How hard is it to change into human biology?

Biology is going to be capped starting fall 2016. The division of biological sciences hasn’t released any details yet, though.