Workshop: What to put on CV when you had multiple roles?
Maybe you can create a heading for "Workshop Experience", "Workshop Facilitated" or something along these lines. Then include all your workshop experiences there. You may have responsibilities such as:


Wrote the proposal for the initial funding and organization of the workshop
Gave a talk on ... (if needed to include the talk's name)
Reviewing submissions
Serving on committees (or lead sessions)
Coordinating and organizing events and conferences
Making ...
...


You may also modify the format above and in front of each activity, name the workshops where you did that task.