I just installed the latest version of Proxmox 7.2.7 and created a ZFS with 3 6TB HDD's. For some reason when I try to create a VM I do not see anything in the resource pool. I checked my ZFS and I only have 2 options.
If you did not create resource pools yourself, it won't show any. And you can just leave that empty when creating a VM.
You do seem to have a ZFS pool that can store disk images, so that should be usable as storage for the virtual disk(s).
Unless I'm misunderstanding your question maybe?