Supporter Question

I have a question regarding multisites and the supporter plugin. I am still confused about how new user registration works.

Someone signs up for site as a supporter and creates a blog.... ie... thelazyecomama. Now thelazyecomama wants users to sign up for their own non-supporter blogs and subscribe to her blog. thelazyecomama/sharena. What kind of features does sharena have? Does it trickle down from the controls I put on the main site or now its just under the control of thelazyecomama?

I hope this makes sense...