I have a question as most of the tutorials I found are more and less stand alone, I would like to see and integrate some characters, story, scripts and dialog in the actual campaign.
Do you by any chance know how to do this? I assume I don't have to copy all existing levels of the campaign and add my NPCs in there.
I have listed all tutorial videos I've seen mentioned on the forum on
https://docs.larian.game/Community:_Getting_Started. Windemere's "Implementing a Basic Quest" probably comes closest to what you ask for.