Template Override

Hi there, We need to make customizations on WPLMS and we need to know how to do that without losing them after updates; I mean how can we do template overrides. We especially need to do the customizaiton in the vibe question module. We need this, because, the quiz is too slow. When we click on the next question, it waits for a while. We need the navigation between questions should be faster. Moreover, for mobile users, they should be able to swipe to see the other question back and forth. If you can do such a customizaiton, it would be better for us and for all your users. Because, quizzes are the backbone for every LMS and this would be greatly aappreciated by yoour customers.