best way to delete satellite?

[ddd]

Hi, wondering if anyone knows the best way to delete a satellite and all its channels from the dreambox 500s.
When viewing a channel, then hitting ok, then hitting the green button comes up with a list of satellites stored on the box. I was wanting to remove some of them to tidy up. Its a gemini image installed.
The only way I can see is by opening up the satellite to show its contents then doing it one by one which would take an eternity.