If you just want the ingame map, you go to the github and download the project.
Then do this:
- Upload oulsen_satmap folder to your resources folder on your server
- Add oulsen_satmap to the server.cfg file (start or ensure).
- Optional, change the map to the nogrid version. Just copy the files in the NoGrid folder and paste/overwrite these files in the stream folder of the resource.
- Start the resource or reboot your server
If you want to use the nearest postal script, which is a separate resource and not needed to get the ingame map to work, you will need to download that from https://forum.cfx.re/t/release-nearest-postal-script/ and set it up with the oulsen_satmap_postals.json from the github download.