Laravel Authorization

Hi,
I'm using Metronic 8 with Laravel, and there are some tables such as 'roles', 'permissions', 'role_has_permissions', 'model_has_roles' and 'model_has_permissions' to handle authorization.

I couldn't figure out how to use these tables, especially last two tables. Also, there is no field in a table to bind users with roles. How should I use these tables? How should I bind users with roles?

Can you help me how to use them? Do you have any documentation for it?

Thanks in advance