I have pre-planned routes that I have received from others and some from tracking myself going around. I have added some markers on map for hill climbs, water crossings, wash outs, tech inspection, service, reserved lodging, gates, entrances, etc and have to individually select each item on and off depending on where I plan on riding. Example could be Wharton State Forest, Sandblast Rally, McCreary Gravel Rally, Famous Reading Outdoors. Each is a unique event/place that I could save waypoints, gpx routes, locations as a bundle and hide or show all as one without fear of missing things.
Below is a small example of a local multi-tier canal that I noted gates, wash outs, and entrances from the main roads. 7 waypoints/markers and 1 track on/off with one button press.