Windows 10: Forcing user to select Language, timezone and keyboard at first boot

I'm building a kiosk running Windows 10 IoT LTSC 2021, but since we distribute our solutions worldwide I would like to give the costumer's the option to select their own language, keyboard and timezone settings during the initial boot. I know that I could just use sysprep and generalize the image but for security reasons we need to have the user accounts in place with a bunch of policies and registry setting already in place.Does anyone know of a way to keep existing users but in the same time give the customer's a easier way to select their language settings than going into the "Time & La

:)