Is it possible for multiple people to do the scanning at the event?

It's possible to allow others to scan tickets at the door without granting them full access to your organiser account. You can achieve this by generating organiser keys.

Here's how:
1. Go to "My events" at the top left corner of the screen
2. Click "Manage" next to the relevant event
3. On the left hand side "On site" - "Billetto App" option from the list on the left-hand side
4. Click on "Generate Organiser Key"

You can then hand this key over to those who will be scanning for you, they can use it to 'connect' with your account without any ability to access your sensitive account information.