It's pretty easy to edit a question, add a new one, or delete one for your event!
Go to your Manage Website page here. If you click on your RSVP page, it will pull up a list of events that you have created. Just select the event you wish to edit in order to make any changes to those questions or add one in. You can click on the pencil icon to make any adjustments to your questions.
If you have already had guests answer those questions and you want to delete it, you will have to go into your 'Track RSVPs' page in order to remove the answers before you can delete a question entirely. But once those are updated, you will be able to click on the trash can that appears after you click on the pencil icon, and it will no longer track answers or show up on that event.