Filament Installation and User Restrictions

I don't think Filament supports that specifically. What you need is probably config/auth.php in Laravel, check the options here: https://github.com/laravel/laravel/blob/9.x/config/auth.php

ok, will check, but another thing which I was looking for, I want to execute some code when a new record is created or old is updated, How can we call the related hook or closure in resource?

Again, I would to it outside of Filament, with Model Observers: https://laravel.com/docs/9.x/eloquent#observers

They are planning something like that in Filament 3, but at the moment it's not (easily) possible.

I'm solving by putting a fixed fake email that is not visible to the user and only asks for the password in the form :)

You can install Filament in a fresh project, yes, but what's the use of it? Filament resources work with existing Laravel models, so if you don't have them, there will be no use from Filament.

It should work, but can't guarantee without looking at the code. I think you can try and see what happens.