The transaction summary page shows the items you have selected thus far.
 - you can click the green pencil icon to edit your registration.

 - you can click the red X icon to remove the persons registration.  ( if more than 1 person )

If you have been provided with a Promotion Code, you can click the Apply Promotion Code button and enter it in the pop up window.

To add an additional person to this registration, click the "Add Another Registration" button.   ( not always visible )
 - to continue to the next page click Continue.