Yes, I believe it would be the easiest to have another table that contains the event ID, the participant ID, a Date, and the Answer. The Event table would just contain information about the event. The new responses table would contain a list of all responses for all events. To link the Event table to the Response table, all you need is a Multiple Relation column that links the Event ID in the Events table to the Event ID in the Responses table. On the events table, you can have a form button to submit a response. Inside of the form, you can automatically include the Event ID, the User Email or ID, and the Date without them having to type or select from a list of choices. All they need to select is their answer. Then you could display an inline list in the Event details screen that uses the relation as the source.