I am new to django and I am building a simple app that has some levels with tasks which a user have to complete. It has 7 levels, a user have to complete a specific level (which has a task) to unlock the next level. Unless he completes the previous task he can't access the next level or the webpage or url. So there is a Groups thing in django. Shall I use that to achieve the functionality or is there any other stuff I shall do/use? Thank you.