configureChart - adding multiple short lengthened marks (not across full screen)

Does anyone know how to add shorter tic or crosshair marks in Charts - configureChart extension using jfree?
I have been trying to find info about this, but the ValueMarker class adds a line horizontally and vertically across the full screen. When I do multiple, they get messy and intersect at multiple locations. I would like it to be a shorter line so I can mark many different coordinates without intersecting.
I tried seeing if I could use the Crosshair class in jfree, but get an error that it can’t be imported. Though I’m not sure if Crosshair would achieve what I want.