There are actually few basic/general things that children can`t do in this game, allowing you to free up role slots for more complex tasks on a lot of adults. Pregnant women, and women carrying their children have the same restrictions as children. Elders can still do everything, they are just slower and tire faster.


-All can do:
General Labor, Basic Building, Investigation*, Diplomacy
Fire Lighting, Butchery, Basic Coocking, Grinding, Baking
Pottery, Ceramics
Rock Knapping, Flint Knapping, Bone Carving
Flax Spinning, Tool Assembly
Music

-Children, Pregnant and Women carrying a child can`t do:
Basic Hunting, Spear Hunting
Digging, Mining, Tiling
Thatch Building, Wood Building, Mud Brick Building, Brick Building
Tree Felling, Wood Working
Planting, Threshing

*Investigations restriced to Roles the Sapiens can fullfill

Hope this helps you speed up you Tribe organisation a bit, or at least gives you a quick overview on what to plan for.

Happy Civilisation Building =)