How to create folders in the iocage folder of my plex

I use PLEX in my TRUENAS CORE. It works perfect.
I want to create a second MOUNT POINT in a second POOL.
I have to create a folder in:

/mnt/z3 8Tb x 12/iocage/jails/PLEX_PRA3/root/media/

How do I do it? I’ve try with the shell but due to the pool name I can’t.

Any suggestion?

Is there a way to change a pool name without erasing it?

Have you try to stop the pool and add the mount point via GUI? I have done the same with no issue

HOWTO: Rename a ZFS pool

I’ve done everything at the GUI.
But I don’t have any idea how to do that in the CLI. Can you explain?