Current questions and answers regarding the map editor.

In the prison's properties as an object, a link to the AdvMapHero object of the hero is specified. Create a new one with the New button, specify the path to Agrael's Shared file (if memory serves, MapObjects/Heroes/DS/Agrael_M or Inferno/Agrael). Be sure to specify Shared, otherwise the game will start crashing.

Then open the prison with a space — it will be Agrael

Thank you very much! It works! =)

But, in pursuit of improvements, I keep diving deeper into this rabbit hole, which has led to new questions:
1) In your guide on weeks (Thank you very much, it's great!) it says that you need to specify the path to the new file with weeks in map.xdb. What should this path be? For some reason, when I created my MyCalendar, it was created in the map's folder, in the GameMechanics subfolder, meaning the map archive contains 2 folders — GameMechanics/MoonCalendar/MyCalendar.xdb and Maps/Multiplayer/MapName/many files, including map.xdb. Is that how it should be? And will the path be <MoonCalendar href=GameMechanics/MoonCalendar/MyCalendar.xdb#xpointer(/MoonCalendar)/>. Or do the quotes matter too, and if so, should they be single or double, because in the manual on the left there are two single quotes, and on the right — doubled ones?

2) Is there any way to view the water passability map? By default, the editor fills all water with red, but it would be interesting to check rock collisions, and where you can and cannot sail around them. 

Thank you very much! (And I have a feeling I'll be back with more questions=))