Over time Process may not be needed on a weekly basis. When this issue arises you can archive or return a process to the library for later use. To do so the process owner can select the file box icon on the top of the process.
A second way to do this is within the process itself. Anyone on the team can go to the Suggestion Icon and then from the pulldown select "Archive process" and give a reason. The process owner can then accept or reject that suggestion. If they accept it, the process goes into the library.