Authorization for a WBS / Activity

Question

Dear Gurus,
The scenario is like this -
Our client is operating on ETO scenario and have 4 - 5 departments viz. engineering, procurement, production, Installation etc. The major business runs through projects.
I have allocated WBS elements for each of their departments and activities are linked to it.
The client requirement is as follows:
1) Particular department users should be able to access their WBS (Ex. Engineering users should access and confirm their relevant activities)
2) No other dept person should be able to modify other's WBS.
3) Anybody in the company should be able to view all WBS but should not be able to modify it.
4) Some of the WBS should not be even viewed by anybody barring personnel from that department only.
5) Project manager should be able to view all WBS but should not be able to modify any of them. But if project manager is a part of dept then he should have modify access to his WBS but view access for all WBS.
Request you to suggest me how to configure this in the system preferably with an example.
Will give full marks to the relevant answers.
Awaiting your reply.

Answer 1

You need to give a holler to your security team here. All of your requirements can be met but you have to connect with your security guy and disccuss it further. As an example - you can restrict your Engineering department etc by plant, business area or company code etc.
Certainly all of this is possible.
Hope it helps.
Arya