Manage Permissions on Customized ProcessView Page

Hello,

i have build a customized ProcessViewPage. On my Workflow i have set this Page at the SetupProcess Component. All works fine.

But now the customer can see all Webparts that also can be seen by the 2nd Level . Is it possible to set Permissions that 2nd Level can see the "Related Process" Webpart  for example but the customer doesn't see it.

Has anyone an idea for this.

Thanks for your help.