How to delete old Pools in TN Scale for a clean install?

Hello everyone, in the beginning I had created pools (3 pools) for testing purposes. Now I want to delete all pools / datasets and create a new pool. But I don’t see a delete anywhere, I see my 3 old test pools listed. I had reset the TN Scale system to default, but the disks are still listed. Removing the nvme disks and formatting them in another system is too much work for me.
Thanks for your help!!!

Under Storage you can disconnect the old pools

Hallo Nordlicht-13, Thank you very much, I have finally found it!
Have a good week!
Greetings
Novell1