Current questions and answers regarding the map editor.

There's a map for duel presets where 3 heroes of each faction are displayed for duel presets. Adding another hero to the map will likely add them to the list of duel heroes. I'll share the link to this map for presets a bit later.

I also recommend talking to those who have already added duel heroes. I know for sure that it was Waterfall and the author of the mod, Er_presets.