Once you get a few missions done for the outpost, more NPCs will show up and some of them have things that they can do for you.
Here’s the ones I remember encountering:
-can pay a guy to chop up logs for you
-can pay one guy for construction training, but you’re probably better off finding an NPC that can teach you or a book
-have them plant seeds for you (need to purchase some land first, has a max limit of seeds you can plant)
-have a nurse heal you or your NPCs
-doctor that can add or remove bionics with a usually better chance of success
-bartender. buying drinks can supply you with infinite glass bottles.
-scavenging missions, NPC assigned can find random items.
There’s a few other missions that you can assign NPCs to. Scavenging and escorting merchants/supplies has a risk of the NPC dying, or some combat training.