I want items on a layout to Snap to Grid, ONLY! It used to work in previous versions of FMP, when you set ruler units.
I've set Major Grid Spacing at 1 in, and Minor Grid Steps at 8, which should be every .125"
But when I move things around, sometimes things snap to .125 increments, but most often they don't. I spend half or more of my time tweaking things with the cursor or typing in units, making the grid essentially useless. Yes, I'm pretty OCD when it comes to my layouts.
In Illustrator, align to grid means align to grid! I use the cursor or manually type units to move things OFF the grid.