modify permissions on Cluster Shared Volume

I need to change permissions on a CSV in a Hyper-V cluster, because I need to allow write access to junior admins who aren't either domain admins nor local administrators on the cluster nodes.

My questions are:

 - is this supported?

 - won't it break stuff?

 - I assume, the permissions should be changed on the underlying volume (identified by the GUID) rather than on the mount point (reparse point)?

Thanks in advance