Loggin Symfony 4 with doctrine inheritance

I have multiple users types in my application which all inherit from their superclass named User.

So I have :

• User > employee, customer, admin... Informations like password, name, nickame.. are in parent. I can manage inheritance in my app it's ok but where I'm stuck is with loggin form and processing. I've watched lots of tutorials but none of them shows how to do auth with inheritance.

I'm new to symfony btw.

Could someone enligthen me ?

Thx !