One Step: Book for your guest and yourself
Go to the "Calendar" tab > Select the session in question > Click on "Add a guest" > Fill in the form (first name, last name, email address).
You do not have to fill in all the fields in the form, only the first name is mandatory. You can't book only for your guest, you also register for the session.
Finally, click on "Book".
From the app (only possible with the branded app)
Log in as a member in the app, and choose the session you want to book > book
Click on ''add a guest''
Fill in the data of the member you want to book in > Confirm