In the Grid Vectors area, click Create Grid Vectors to draw the grid lines. The horizontal (X) and vertical (Y) lines are grouped separately.
For example, in a 1000 x 1000 mm model with the Shape Width set to 50 mm, the Shape Height set to 100 mm and the Cutting Gap and Edge Clearance set to 6 mm, the grid artwork in the 2D view looks like this:
