Zfs pool for virtual machine storage xcp-ng

I installed xcp with no problems. When it came to choosing the drive to install xcp I choose an ssd. Next it asked which drives for virtual machine storage and I didn’t select any. After booting successfully I ssh into xcp and installed zfs. I created a zfs raid2 pool with 7 2 tb sas drives.
My question is how to I now make this zfs pool the storage for the virtual machines?