Is it possible to create a button in a greeter theme that automatically logs the user as a specified user? To make things a little clearer, our uni uses a generic account for people to login with to get their initial accounts / passwords set up. Currently the theme just says "to get your password login with..." but it would be much easier if it could just have a "click here to get for initial account setup".
Unfortunately I can't seem to find any mention of something like this in the documentation. The closest I can see is: