The information in this article applies to:
I want to change the direction of floor or ceiling joists in a certain area of my plan, how can this be done?
You can specify the direction that the joists build using a Joist Direction Line, however this will force all the joists sharing a floor platform area (i.e., all relevant floor or ceiling at the same elevation) to build in the direction specified. To break up the direction joists build without changing the elevation of your floors or ceilings, place a Bearing Line along with multiple Joist Direction Lines to manually control the direction the joists generate.
In this example, a simple four-walled structure will be used. By default, the joists build in one direction throughout the structure.