Disabling a resource
To disable a resource, go to its settings and switch 'Published' to 'Draft' in the top right corner.
Deleting a resource
To delete a resource, go to 'Resources' and click the small 'x' on the right side of the resource you want to remove. If there are any open bookings for that resource, you'll get a message saying it can't be deleted right now. You'll need to either wait for these bookings to finish or cancel them first.