2.0.10 User Groups - how to enable for customers?

I’m trying out 2.0.10 and I can’t figure out how to add the User Groups I’ve configured to appear in the customer registration form. Any tips? the KB and Forum haven’t enlightened me.

Of course, as soon as I post, I figure it out (I should have posted earlier!). For others scratching their heads over this, the User Groups only appear as a second tab on the registration form AFTER a user has registered.