Not required.
Here is how you can find a spot on the wall target for many kinds of banks and kicks....
First figure out the general nature of the shot and how you are going to play it. One example would be the standard 3-cushion kick (which could use the corner-5 system if you wanted to count) played with running follow, and another would be a bank shot to the side with a sliding (as opposed to rolling) object ball.
Also think about the range of ball positions over which you want the shot to work. You might want the 3-rail kick to work when coming from the side pocket or from the middle of the end rail. (Technically, those would be called the "shortest" and "longest" starting positions for that shot.)
Find the line the ball has to go along for a shot from one of the extreme positions. Mark that line with two coins on the rails. Find the line for a shot from the other extreme position. Mark that line with coins.
Place a real, physical target where those two lines cross, which is normally somewhere out in the room. In lessons, I use a camera tripod and a pool ball into which I have screwed a 1/4-20 screw that goes on a camera tripod mount foot. You could use a piece of chalk on a bar stool.
There is one precise place where those two lines cross at an exact distance from the table. There is only one point.
At this point you know that if you shoot a ball along either of the two original lines at that single spot, the ball will go to the required target. Now, try shooting the same shot from a startig point halfway between those two extremes. For example, you could shoot the 3-cushion kick from half a diamond up the long rail. You shoot at that same target out in the room where the two lines cross and where I would have put my ball on a tripod.
If the shot from the middle starting point does not go to the target, you set too large a range for the shot. Either you can narrow the range over which you expect that single spot on the wall to work, or you can try to modify the system in some way to force it to work. One example of forcing the shot to work is on the 3-cushion kick. As the shot gets shorter, use more side spin and jack up a little -- that might fix things.
A main point here is that spot-on-the-wall systems are easy to construct on your own for your own equipment and conditions.
Another very important point is that not just any point will do. It has to be at the right distance or it can't work well for all starting points. It almost certainly will not be on the wall.
