Default [Q] Stay on indefinitely

I bought a tabpro 12.2 to use in my office. It will be used for patients to register for events through our office website. The main problem I am running into is that the max amount of time before the tab shuts off is 30 minutes.

Problem 1: I need it to stay on indefinitely without going to black screen

Problem 2: Would like to know if you are able to use a customized screen saver. Such as a screen with a picture saying "Register Here" and then when they swipe it opens up to the page I want.

I tried searching the forum and online but can't find anything that is helpful. Sorry, I am a newbie at this so if I left out any information or if you need clarification please let me know.

I very much appreciate any help you can give!