1 to 4 Aiming:
Fig. 8
First, you will line up your aim (a virtual line) from the quadrant 1 of the cue ball to the quadrant 4 of the object ball (as shown by a dashed line). After the line up, you will not move your bridge hand at all. You will move the cue stick’s tip to the center of the cue ball. This last line up will be your shot line up. Using a smooth stroke, you will pocket the object ball in the pocket. Please look Fig 8 above for a detail view.
Similarly, we replicate the method for the Situation B where the pocket is on right to our aim. Practice for both situations for thinner shots. Practice for different distances and angles or different views where you can see less than 50% of the object ball in respect to a straight shot (full shot).
I have prepared a video to explain further hope it will help but sorry for a poor quality as I am not a good cameraman.