Add half left/half right in window resize&move predefined actions

Hello dear developer,
As you know, after the Window Snapping-Normal Left/Right Width is set, for example 65%, the predefined action 'maximize window left/right' would resize window to 65%.

However, I need two kind of resize percent, one is 65%, the other is 50%, which can't be replaced by third left predefined actions.

Half left/ half right is wanted very much.
Thank you.