We have a custom module that works with PoS Self-Ordering, this module adds a form on the payment screen for the customer to enter their info, and with this, the system creates a contact and assigns it to the order. All the tests have been done on the Mobile Menu that can be deployed from the PoS module, but we didn't consider that when doing this we are using an 'Administrator' user, that's why it worked correctly, but the customer will scan a QR that's on the restaurant table to access the mobile menu and by doing this they are accessing with a 'Public' user that doesn't have the permissions to create a contact and the form does not work, please I need to know what models are necessary to make a Contact so I can assign them to the 'Public' user.