1. Select Concrete Crew in the Resource Screen.2. Right Click to open the context menu and select Add Human3. A New Human Resource will be added below Concrete Crew and it will be indented. Rename this human resource to Carpenter4. Again, highlight Concrete Crew in the Resource Screen5. Right Click to open the context menu and select Add Human6. A second New Human Resource will be added below Concrete Crew and it will be indented. Rename this human resource to Labourer7. Repeat this process to add Iron Worker and Finisher under the Concrete Crew. Once all the sub-resources have been added the Resource Screen should look as follows