When you have invited participants to book on a form, you can track who have accepted, declined or not answered their invitation.
1. Go to Lists in the main menu.
2. Create a "Dynamic list of participants in a project".
3. Information: Set a list name: "Participant invitation status"
4. Fields: Gender, Last name, First name, Status
5. Options: Choose which participant status options to include. In the example below, I only select 'Invited', to only see those who have not yet answered their invitation.
6. The list: