Can use MouseWheel on the Allocate-Engineers-screen to increase or decrease the value of engineers or units.
This is independent of the allowChangeListValuesByMouseWheel option.
The whole area of the window can be used to increase/decrease with the MouseWheel.
Using Mouse-wheel on the Left-part of the screen changes the value of the engineers, while on the Right-part of the screen changes the value of the units to produce.
Oh, and it changes the values by changeValueByMouseWheel, which is 10 by default!
And of course increase and decrease parts of the Allocate-Engineers-screen is refactored, generalized.