The simplest way is to fist just draw some tin track from center to center of the two pins, and then a wide track from the middle of that short track.
Another way, and almost as simple is to create a copper zone and then define it’s boundaries where you want it.
Yet another way is to modify the footprint, and combine two of the pads into one. You could disable the solder mask layer and create aperture pads for the individual pins.
But the bigger picture, is this all relevant?
Your first screenshot is without context. It does not appear to signify copper area, but something else. apparently they find some kind of symmetry important.
From your second screenshot, I guess this is some kind of Hall sensor IC. These may be susceptible to stray fields, but sensitivity would decrease rapidly with distance, and these HALL sensors are not terribly accurate in the first place anyway. So why bother?
The PCB tracks do have to handle your motor current. That may need wide tracks and/or thicker copper, but there are guide lines and calculators for that.
