The grids always consist of segments of 5 x 5 (no matter what grid spacing you choose).
Is it possible to put this in, for example, 4 x 4 or 3 x 3?

See attached example.

Click image for larger version. 

Name:	Grid Sets 5x5 4x4 3x3.jpg 
Views:	157 
Size:	79.6 KB 
ID:	92327