Add custom role in wordpress

If you want to add more roles in wordpress which are not available by default then you need to add custom role on wordpress here is the code which helps you to add new role in wordpress

add_action('init', 'add_new_role_method');

function add_new_role_method(){

    $role = add_role( 'manager', 'Manager', array( 'read' => true,) );
    $role = add_role( 'registered', 'Registered', array( 'read' => true,) );

}

Ref url if you want more about role and capabilities.

Here is list of capabilities array in role