Change length of multiple stacked notes at once

Hey! The title is pretty much self explanatory.

Would be great to be able to change note length for several notes at once (vertically of course...)

example: You initially wrote a whole note chord spread over 10 instruments. Then you realized it would be much better to have it shorter than that. Let's say 3 beats.

Such a feature would make the whole operation worth two mouseclicks, as opposed to the actual workaround take much longer than that.

cheers