[How to delete an organization ?]

Good everything to everyone,

I am quite new too Plastic SCM and when I have migrated from Unity Collaboration to Plastic SCM, it also found that some years ago, I was invited to work on a projet by a other friend.

Now, I am part of two organization and it makes some trouble when I want to create a repository. How can I delete the organization I don't want.

Here is a screen capture to make it more clear.

Thank you