Click on the main industry source code to access the main industry source code screen.
The screen below shows the main industry source code, a profit code, a province and a profit code description. In order to get the right main industry source code click on the three dots and the window with the brown border will open. Click on the industry type on the left hand side and you will get further items in the middle column. Then click on construction, and in the middle column we have three items and again we click on construction of buildings and then the right column comes up with construction of buildings, click on select and system will automatically put in the main industry source code 4
The same will apply to the profit code. The system will lead you through the various options.
