How to add a new faction (race)?

To add a new faction/race you just need to create a Faction Data and fill it with your data.

To create a new Faction Data, you just need to click RMB in the Project Window, and select Create -> RTS Starter Kit -> Faction Data.

In a Faction Data you can setup parameters of your faction:

It is very simple. You write its name and add Unit Data of this faction Command Center building.

All data about available units and buildings already setted up in Unit Datas of this faction (command center production categories -> units of these categories -> etc).

Finally, you need add it to the Storage into the Available Factions field: