The first thing to do after you've set up your physical booth, is to head over to the admin panel and tap on Quick Links, followed by Collect Booth Payments.
You'll be brought to the front of your page where events are listed, and the next steps are to get your guests to purchase a ticket for the event on the spot.
The link will look similar to this format: https://www.useget.com/@USERNAME/booth
Note that at the end of the purchase flow, your guest should click on the Pay By Cash button which will generate a cash request on your app.
Once that's done, open the app and switch to your Team account.
Click on the Payment tab, and tap on the Request icon.
After your guest has paid you in cash, click on the Confirm Payment button to validate the transaction.
And that's it!