BPC 10. Security to update and process dimension

Hi SAP BPC experts,

I have two questions in relationship with the update and process of one dimension.

1. When you grant priveleges to work with dimensions, you give access to all the dimensions. Is there any way to give access to only one dimension?
2. When you give access to process dimensions, the system gives access only to this task or to all the adminstration tasks? I have created one profile with only the "Manage dimension task" and I have assigned it to the user. When I access the system with this user I can see and do all the administration tasks of SAP BPC. The user does not have any other profiles and does not belong to any team. What can be wrong??

Thanks in advance