1. Login to the SanoServers Control Panel
  2. Navigate to your server’s control panel
  3. Stop your server if it’s running.
  4. Click Files on the left-hand side of the server’s control panel
  5. Navigate to /garrysmod/maps/
  6. Click Upload in the top right corner
  7. Select the custom map you want to upload
  8. Click Upload again
  9. Once the upload is complete, restart your server
  10. The custom map should now be available on your server
Your Garrys Mod server should now have the custom map installed. Players will now be able to play on the custom map when they connect to your server.