Making my layout drawings black and white

I am submitting permit drawings and they require the drawings be black and white. How can I change it??

Thanks

Assuming your “drawings” are actually views from a Sketchup model, go to SketchUp and change the style for the scenes to Hidden Line making sure the background is set to white (no sky, no ground). Update all of the scenes to use that style. Then save and update the reference in LayOut. All of the viewports should update and show the new style. This also assumes you haven’t modified the scenes in LayOut.