Combine of unit count button

[myavuzokumus]

We can adjust the product unit count in this transaction section with the green and red buttons.

Is it possible to combine them in one click?

For example, can it be set to increase 1 with left click, 16 with shift+left click, and decrease by 1 with right click and 16 with shift+right click?

[XZot1K]

We can adjust the product unit count in this transaction section with the green and red buttons.

Is it possible to combine them in one click?

For example, can it be set to increase 1 with left click, 16 with shift+left click, and decrease by 1 with right click and 16 with shift+right click?

This is kind of self-resolving with the new menu changes i'll be doing. I want to make the menu features completely customizable so this will be kept in mind.