SOS for CO - Overhead Cost Controlling (COOM)

Question

Dear FICO GURU,
I am PP/PM Consultant , Would request some knowledge sharing about CO.
Understand in standard SAP Overhead Cost Controlling consist of 3 component following :
o        Cost Center Accounting
o        Internal Orders
o        Activity based costing
Overhead costs are defined as costs that cannot be assigned directly to cost objects.
My Question :
In one Plant , can we use all the above ? Or we can only use either one ?
Understand there is cost apportionment in CO , If we using Overhead cost controlling , can we still use this function ?
Is cost Apportionment only applicable for CO Product in Production Planning ? What's the prerequisite ?
Thank you.

Answer 1

Yes, sure you can. However it would be a long story to convince you. But first I revert the question:
Can we use different material groups in one company code?
The above mentioned 3 areas generally doing the same but with different functionalities but the story is the same:
Storing and sending costs from one place to another, sometimes grouping them sometimes transforming them.
Cheers
M