I am using Fusion 360 version 2.0.1596
When I see my workspace there is a layout grid. See this screenshot:
https://www.dropbox.com/s/88ntnaarkt881so/Screenshot%202015-09-07%2010.00.03.png?dl=0
But as soon as I start a sketch, the layout grid disappears, and the option to turn it back on is unavailable. See this screenshot:
https://www.dropbox.com/s/gt48a1m9kic4mjp/Screenshot%202015-09-07%2010.02.30.png?dl=0
This is not helpful behaviour mainly because I can't find the sketch orgin.
I don't think this is the right place to post a bug report, but it is my only option in the program.