Adding a grid in EstlCam

I cannot seem to add in the 10 by 10mm grid in EstlCam I know I have a different version than the one used in the instructions because the menu setups are different. But when I go to View>Grid and type a 10 by 10mm grid one does not appear. Even when I import a the crown file.

Zoom in or out?

ah It wasnt imported in the proper dimension thanks