Overall Event Custom Fields can be added "on the fly" from any event's Overview tab, or under Setup > Miscellaneous > Custom Fields.

1. Select the event's Overview tab and click the pencil icon   in the Overall Event Custom Fields section.

   

2. In the Edit Event Fields window, click the pencil icon   .

   

3. In the Edit Event Custom Fields window, click the plus icon  to add a new field.

   

4. Configure the custom field as needed. See Custom Fields for further instructions on custom field types.
5. Click Done.
6. Click Done again.
7. Click Done one more time to complete adding the custom field to your Overall Event Custom Fields.