There are currently 2 kinds of supporters.
Approvers can approve changes to your Plucky configurations so that they take effect before the normal delay period has elapsed. They, along with cohorts, are the hamsters that make the expedite button go.
Inspectors on the other hand can do all the things that approvers can, plus they can also view the complete history of any synchronized configurations of another user. Inspectors are usually accountability partners or parents.
If you are looking for even stronger support from others or parental-control, see restricted devices.