This tab provides controls for axis grids, including the grids style and position etc. For 2D graphs, you can separately customize the verical/horizontal direction; for 3D graphs, there are three direction (X, Y and Z) to be customized.
Starting with Origin 2017, you can use the Layer list to switch between layers in a multi-layer graph.
Select the Show check box to display major grids. Major grid lines are straight lines that emanate from major tick marks.
Select the desired line color from the associated drop-down list.
Select the desired line style from the associated drop-down list.
Type or select the desired line thickness (in points) from the Thickness combination box.
Select the Opposite check box to display a straight line opposite the current axis.
Select the Y= (or X=) check box to enter a value in the box to add a straight line.