Just started playing a few hours ago and decided to start my settlement sooner rather than later. I have done at least the first bunch of quests for the first settlement. I have plenty of food, water, beds, defense. I have built a generator, water pump, water purifier, and radio tower. I've connected the generator to the purifier and tower, and have turned everything on. But I still don't have any new settlers.....is there a quest I have to do or do I have to manually recruit them?