Confusion around using journals and auto-provisioning in RP 5.1

Hi Folks

Hopefully someone can help me out here as i'm a little confused about the use of journals and auto-provisioning in RP v5.1.

We are well used to using a journal per LUN in our RP environment for VNX and XtremIO. However, I can't seem to find any clear instructions about how to use them for with our new XtremIO X2 array.

Is it still one journal per protected volume? one per CG? one for the whole array?

Also, when I ask RP to automatically provision the journal and the replication target volumes, although it seems to give them sensible names in UniSphere for RP, when I look in the XMS for XtremIO, neither the volume names or the UIDs for the journal or the target volumes listed in UniSphere are listed anywhere. I can see the volumes being created but have no way to tell which is which. What is this link supposed to be and is there a way to get it to name them relevantly on the XtremIO?

Any Help Appreciated

Michael