same login interface, how do i redirect when user have multiple roles ?advice needed

You could do something like this :

if($user->hasRole('admin')) return redirect('/admin');
    elseif($user->hasRole('manager')) return redirect('/manage');
    else return redirect('/');

The actual implementation will depend on how your code is structured, but basically you iterate through the different options. Just place them in order of which matters the most (ie: you might want a user who is both admin and regular user to be redirected to the admin dashboard, so make that check first).

Note a user this time around will have admin & manager role....