AstralLein
Auto-translated
It's better to place them using a script; there is a way to do it.... but sometimes the placed hero appears in the corner of the map... and not just the hero.... if you delete it, the hero will disappear.
Click on the castle; on the properties panel on the left, there is a garrison hero; you can set a default one, and then modify it by changing it to the desired hero through this window.
Added 9 minutes later
What I wrote is completely unclear.
On the left, when a city is selected, there are object properties. Among them, there is an item with a link to the hero in the garrison. Ideally, he should already be there. If a hero exists, then go to the hero settings and fill in the items; the link in it will point to the hero himself (the basic one); you can choose another one by clicking on it.
Click on the castle; on the properties panel on the left, there is a garrison hero; you can set a default one, and then modify it by changing it to the desired hero through this window.
Added 9 minutes later
What I wrote is completely unclear.
On the left, when a city is selected, there are object properties. Among them, there is an item with a link to the hero in the garrison. Ideally, he should already be there. If a hero exists, then go to the hero settings and fill in the items; the link in it will point to the hero himself (the basic one); you can choose another one by clicking on it.