Convert All Chatter Groups to Sites
You can convert all of you Chatter Groups into Sites by clicking on the Run button.
Revert All Sites to Chatter Groups
You can revert all of your Sites into Chatter Groups by clicking on the Run button.
Disable Dashboard and Content Features
You can disable Dashboard and Content features on all Sites so that they act more like Chatter Groups. To do this you click on the Run button. Once Run is selected, all existing sites will be updated and cannot be reverted. Dashboard, Pages, Events, and Albums will be disabled; these features can then be re-activated on individual Sites.