The “Colony Overview” screen saw major quality-of-life fixes in 0.12.0.4 and 0.12.0.5 .
You recruit villagers (farmers, miners, foresters) using a banner tool. Every colonist requires a bed and a steady supply of food to stay alive and productive.
If you need that specific version for mod development or nostalgia, here is the safe method:
Several mods broke after 0.11.x , forcing modders to update to 0.12.0.5 as a base.