Google Analytics subsite tracking for multisite networks

I have a question about Google Analytics for sub sites.

If I install Google Analytics+ on the network, I want each individual sub site to track their own stats. If the plugin can track the whole network, how does it split the traffic for all the subsites and display those stats on each subsites dashboard?

I think I have it down correctly on my staging server for, but want to make sure I’m doing it right.