Whether Team can be assigned as performer in Business process flow in SAP BPC NW 10.0

Hi Experts,

I am working on SAP BPC NW 10.0 and facing a difficulty in assigning Team as a performer in Business Process Flow.

I have Maintained one owner property in the driving dimension of my model and chosen that property at the time of making project template. At the time of setting an Instance i am trying to change performer to a Team.

Reviewer assigned is not included in this team. Now am getting option of submit in reviewer's profile also which was not coming when a single user was assigned as owner.

Kindly Guide me whether performer can only be a single user or Team can also be assigned as owner. And whether performer can be changed in process instance or not.

Thanks in Advance

Rakhi