Flask-Login with Multiple User Classes

So In my flask project I've used Flask-Login to implement a login/registration system. However that is for my Users table. I also have a "Booster" table which has almost the same properties, but a little more. For example, the booster will login to a different part of the website. I have it separated by the routes. So my routes I have are /login, /register and /booster_login and /booster_register. I tried to use the login_user method on my login method under booster_login, but I'm getting a object has no is_active attribute when I submit the booster_login form. I can not just use roles since boosters will have many more attributes than users.So In my flask project I've used Flask-Login to