I'd like to be able to link a subtask to 2 different user stories. Couldn't find any such option easily available in the config screens ..
Any ideas?
If you have the "Theme/Epic" field on the sub-tasks, you can add the issue keys for both of the user stories to that field (their actually labels). Then from any GreenHopper view, you can click on the hyperlinked issue-keys in the Theme/Epic field to bring up a dialog of the user story and all associated issues & sub-tasks.