Begin by going to the GUESTS tab on the top of the page.
Clickon the field you want to change. (For example, you can add a title, change single title to a coupled one, add a spouse's name, or change the last name.)
You can also change the number of seats, the party the guest belongs to, and the linked events the guest is invited to.
Use the drop downs to change these fields or by typing in the information.
You can also select multiple guest by checking the box on the right. Then change the necessary field and this will change the information to all of the selected guests.
The filter option is available to display all of the guests in a certain filter.
Hit Clear Filter to see the entire guest list again.