It looks like the multi-project categories would be perfect for throttling branches of the same project, but I can't seem to save anything. I went to "Manage Hudson" -> "Configure System", added a category, and after saving, going back into configuration shows no categories and there doesn't appear to be a way to select it from the throttle config for a job.

I also tried adding two at once just to see, and neither seemed to be saved. Since we keep Hudon's config.xml under version control, I also checked if there were changes to that but there were not.

Thanks for any tips! This is on Hudson 1.374 with T-C-B 1.1.