Register for an event, 3 clicks to 2 clicks

Currently, it takes my users 3 clicks to register for an event. They start at the calendar, see the details, and Finalize the registration.

The percentage of times they add a guest is low. So they click 3 times to register, annoying for them.

Could you make it so that they can Finalize Registration on the second screen? If they need to add guests, they can click an "Add Guest" button and then finalize registration.