The mesh point locations are calculated by Marlin. They are based on the bed size, specified inset, and the number of points in the mesh. They are spaced equally from each other. You don't get to move the mesh point locations other than by shifting the bed size, number of points and inset.
Which bed leveling system are you using?
In general... You should probe the bed. And then print a G26 mesh validation pattern to see how well the mesh represents the topography of the bed. Have you done that?
Which bed leveling system are you using?
In general... You should probe the bed. And then print a G26 mesh validation pattern to see how well the mesh represents the topography of the bed. Have you done that?