How to restrict access to certain sections of the site? And how to make user groups?

Question

Laravel

For example, so that those who are not authorized and not in the admin group would not have access to the admin panel. And how to set up user groups?

Answer 1

Admin check:
Authorization check:
If the user is not an admin or is not authorized, then he is redirected to the main page.
Substitute your data accordingly and that's it.

Answer 2

And how to set up user groups?

RBAC / ACL