Solved this one too. Instead of the pencil option, select the NPC you want to put down, click "Declared" and then double click where on the map you want them to be.
Playing with the quest editor and events yesterday I solved the problem.
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In detail the problem was the quest not completing. The issue was caused by the player not having the quest; however, I had it set to show in their quest log before them getting said quest (Think of a "beginning your journey" quest where the player starts with a quest)
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My solve to this was to make an event that gave them the quest without option, thus solving my problem.
Azurn's post in (Solved) NPC Spawn was marked as the answer