TFS State Machine Customization and Role Based Constraints

Hi,
As you know, there is a specific state machine for each work item defined in TFS. I should customize the state machine of each work item according to the related document provided.
It seems easy to update state machine items and transitions via Power Tools. But, there should be constraints on role basis. A few samples which shows the needed constraints are as follows; 

1. Only "Analist Role" can change state from Active to Closed.
2. Developers can not change the state of Task type work item from Open to Closed.

Could you please explain the way of applying these kind of rules on project template basis in TFS ?

Thanks in advance..

Best Regards