Security implementation on reports to project managers on project server 2013 using excel services

Hi All,

we have implemented the security(Project server mode) groups like Directors and Project Managers.Both can have access their owned projects and their deparment related projects on PWA(2013).

We need the same security permissions on OOB Reports i.e. Project Overview Dashboard.But Every user can able to see all the projects reports.

How to implement the Security on Reports.

Thanks in Advance

Regards,

Sena.

SENA