SVM Secutiry/Permissions

 Hi,

I need configure the SVM's security to two user groups: PD_Admin and PY_Admin.

   - I created the server group PY_Group;

   - I associated the respectives servers to this group;

   - I associated these Permissions for Server Group: PY_Admin -> clearCache, enterpriseServerInstance, viewGroupMembers and webProductInstance 

   - I included my user name in this group;

When I log with my user name, I see the PY's Enterprise, HTML and WebLogic servers, but I see too the PD WebLogic Server and I can stop it, because this server is an "Independent Instance". 

Question: Can I configure to this user group does not have access to the "Independent Instances"?