How do I create multiple pages for an event registration form?
You can add pages to a form using 'Add Page' on the left-hand side of the 'Edit Registration Form' page.

Once selected, click on the 'Add Page' option, and you'll see the following displayed on the right side of the page.

You can now add a 'Title' to your page, making it clear to attendees which page they are interacting with. If you have tracks added to your registration form, you can also set which tracks can see the page by clicking on the 'Track Visibility' dropdown and toggling the tracks you'd like to be able to see the page.
Once you're happy with your changes, hit 'Save' - voila, your first page is now ready to have some fields added to it!
Multiple pages allow an attendee to skip to different parts of the registration form where a lot of data is required to be captured - they can do this by clicking on the page titles displayed down the left of the registration form when registering/editing their registration. You can order your pages by dragging and dropping them on the left-hand column of the editor - don't forget to save your changes!