Not sure I understand all that you said. I start with making a block. I set the block size and then tab over to snaps and make those 4x the block size... this usually covers all diagonal lines. then save the block drawing, go to Color and save that. Next I go to the quilt layout. If you are using the default layout, I than go to the layout tab and choose my rows and columns of blocks, checking the size in the bottom, getting it close to what I want. I nudge to my desired size with sashing a borders. I hope this helps with what you asked.