Hazard's marker editor works quite well for putting in the AI markers and I have no idea how to do it without that editor. There are two problems though:
1. If there are more than 8 players on the map, the editor won't work properly (Before trying anything, make a SEPERATE folder with all of the map files at a safe location)
2. I have no idea where to download this marker editor, here is the old
GPG link, but the download link is broken.