If you put 2 and 2 together, then you can work out that GRC orgset management needs to be able to transfer the org level values to sets of roles and it must be dialog free for a program to be able to do it in the background, and so it is. Since about a year these are also released APIs on the PFCG side to perform certain operations on roles.
But if you already have the GRC application and the connections, then all you need to do is read the docs and start using it... :-)
Cheers,
Julius