The communal event review can be entered into the Review> page after the activity has been concluded. This can be entered by the organiser or any member of the Unit Council.
All members that were marked as a Participate, Assist or Lead will see the Participate, Assist or Lead in their Milestone page within their Achievement Pathways. Those that were an Assist or Lead will need to do a review on their involvement before this is confirmed & counted towards their Milestone progression.