I asked this question in the "Fiori" area of the SCN, but had no responses, I hope someone in the S/4HANA area can help me here:
"I am looking at the MRP cockpit for a manufacturing client, and they would like to know if it's possible to manage Project Stock through the Fiori MRP Cockpit/one of the MRP apps on S/4HANA on-premise.
From my investigations I believe the answer is currently "no", but I'd like some confirmation of this please, to be sure that Fiori can/cannot be used in this scenario.
Thank you,
Lindsay 
"
Is anyone able to confirm how a client would monitor and manage their plant stock, if not through the MRP cockpit? Are the backend transactions for this available?