Participants can be added to an event's activity in 2 ways:
- Via the Participant module
- Select one or more participants, click on the Actions menu (3 dots) of a participant and select "Add to activity".
- Via the Activity management module
- Select one or more participants in the "All participants" tab and select "Add to activity".
The participant(s) will then be visible in the "Activity participants" tab of the Activity.