Grid settings tab
The Grid Settings tab allows you to select which planes are visible in Model view.
The Grid settings tab is displayed after Show Reference Coordinate Grid has been enabled in Visualization Control menu. See Coordinates.
You can select the color of the grid line In Settings > Visualization. See Visualization.
By default you can toggle z plane grid visible by clicking the plane label in 3D view. If the selection in 3D view does not work, you can select which planes are visualized by first disabling Toggle z planes from 3D view and selecting which planes are visible. This is helpful if the model contains a lot of reference planes and toggling labels from 3D view becomes complicated.