When you're first starting out, there's no real need to divide up your credits by Regional, New York, etc. unless you already have a lot. As bwaylvsong said, you can just put them all in one grouping.
When you accumulate more professional credits, the college theatre credits are the first ones to get removed anyway.
"...everyone finally shut up, and the audience could enjoy the beginning of the Anatevka Pogram in peace."