Once an automation has been created and enabled, it will automatically run for future meetings that match its conditions.
You can view and manually run automations for an existing meeting by following these steps.
Right-click the meeting or open it and select … → Automations.
Run desired automations.
Additionally, you can view all past meetings relevant to an automation and run the automation for select meetings.
Right-click the automation or open it, then select … → Meetings.
Run the automation for desired meetings.