...
Navigate to System> Production Statuses
Click Add Production Status
Select the Plant and add the name Name of the stage (example - Waiting on Framing)
Click Add and the Name of the status will be added to the appropriate Plant. If you like, you can add more statuses from here or exit.
Now that you have your status created, you can move it around by clicking the 4 arrow icon on the left. Click and drag the status to where you need it.
...