It might happen that your Event has a different client company for finance, than for contract - for example.
You can do this when creating a new booking, or alter it later.
New booking
When you create a new booking, you can add a client.
You will be send to the booking flow. See below at 'Booking Flow' for further steps.
Existing booking
If you are inside the event, click on client-tab and linking-icon to add or change your client details.
If you don't have a client linked yet, click on the link.
You will be send to the Booking Flow screen, where you can add or change the contacts.
Booking Flow
On the right, next to every contact you see 'CHANGE'. If you click there, you can change only one contact.
Check the video below to see how it's done!
Video