When enabling capacity it is not real intuitive as to how capacity for a release is set within the Features Board; especially when it is originally showing as N/A.
Frankly, I don't understand why we have to go to the Features Board to enter capacity. We should have an opportunity to do so either when creating the release, or from the Release Details screen.
I think this is a very simple but effective UI improvement.
At the moment, know how to add capacity is confusing because you have to click the field itself. But to my re-collection there is NO other field in Aha! like that. So, by the UX rules of the software, you've not been taught that those things are clickable. I like to think I'm not such a clutzy guy - but it took me ages to work this out as a result. I think that's why.