We have two sites - one for production and one for DR.
On the production  array we have two pools - One for prod and one for non-prod.
On the DR array we have a single pool. 

We want to replicate from Prod site to DR on both pools but there doesn't appear to be a way to do this. 

1. Is it supported?
2. If so how do we do it as there seems no mechanism in the GUI to set this up. 

Thanks 

You can create a child pool in the existing pool on the DR system, then link that to the second pool on the DR system.

Depenind on the software version and pool type (more specifically, whether data redution is in use), you might optionally apply a quota to the child pool to protect capacity for the production usage from the non-prod usage, or you might use a quotaless child pool for simplicity.