Before you clean (or defragment) a Network, Group, or Endpoint, we recommend that you run an audit (or analysis) to determine their health. This allows you to prioritize the actions you are going to carry out.
The clean score for Networks, Groups, and Endpoints can be found in the Health section of the right pane. If you have CCleaner Network Professional (which includes Defraggler), there will also be a number for fragmentation.