Born and raised yooper until I was 25. Next two years just outside Muskegon in norton shores and now in Grandville. Still spend a fair amount of time in UP between Marquette and Houghton.
If you’re on a laptop, when you get to the map you should see a “pencil” symbol on the upper/right corner.
Click the pencil and it will open an editing menu. Click the top icon in that editing menu that pops up and then click on the map to drop the marker on your location. Make sure you hit save afterword or it won’t save your marker.
I’ll have to get on my phone to see how you do it from a cell phone. it should be the same process, but I’m not sure.