I'm trying to use cartalyst sentry 2 in my site being built with Laravel 4. Basically I don't understand how to implement permissions.

The examples I've seen for permissions for a group specify the following as an example:

```
{
    "name" : "Administrator",
    "permissions" : 
    {
        "user.create" : 1,
        "user.delete" : 1,
        "user.view"   : 1,
        "user.update" : 1
    }
}

```

SO this is setting permissions for the admin group. BUT where are these permissions set?

In the table 'groups' there is a field called permissions which is a text field - are they set there - if so how? Or are these set in a model or controller?

Can anyone point me to s step by step on how to use in a laravel 4 app? I've read the supporting docs which foes through the functions but I'm just not sure how to set the data to get the functions to work.