Admin for Process instance started by a Group

Hi,

We have the following set up. A process instance that is deployed for the organization. Say, it has 5 Tasks

The organization has 3 branches. Each branch needs to have an user who can administrate that process instances that are initiated by members of that group only. How to accomplish the above?

Thanks
Kamesh

Any thoughts around How to configure a group admin who can see only all tasks of the group members in Task application ?

Thanks
Kamesh