If you haven't read thru the section on full kiosk mode, you should do so now. Below we'll assume you have done so.
You will need:
N.B. We have set up this installation procedure to use Play Store so that you continue to get automatic updates. There's a note to Experts in the Aesop README on GitHub on the details and how to avoid using Play Store.
The functionality needed for these installation steps, "QR provisioning", is part of Android 7, however not all vendors have implemented it on all devices.
There is some limited information about availability of QR provisioning on specific devices:
The device needs to be cleared to its factory state so that Aesop Player can be installed as a privileged app. This will allow it to activate the Full Kiosk mode. For more information on Factory Reset, see here.
When the factory reset process finishes you are presented with the device "Welcome" screen.
If tapping the "Welcome" screen doesn't have any effect it is likely your device doesn't support "QR provisioning". If that is the case, install Aesop from the Play Store in the usual (manual) way, and then continue using the instructions for the adb method to give it the required privileges.