Ideally do this once your settlement is maxed out in humans at 21. By doing this you can exceed the settler limit arbitrarily as you can always build more. Go to other settlements, go into construction mode, and select 'Move' in a settler to move them to the settlement you are trying to max out.Ģ) Build Automatrons (DLC needed). Maximum number of settlers per settlement is 10 + charisma (max 11, 10 natural plus bobblehead).ġ) Poach.