Change all when in marker is in Groove-column

[Mat]

Would be great if it would be possible for one to change all values within the groove-column all at once to rapidly change the clock of a pattern. For example when in Groove-column, Shift + Up = Groove + 1 / Shift + Down = Groove - 1. Might be a tricky one to accomplish because I'm not sure how the sequencer is supposed to react when playing, and sudden value changes are being applied.