When the column dimensions are changed in concrete rectangular columns with the Growing feature, it is determined in which direction/directions the column will grow and shrink.
Columns can grow or shrink in the direction indicated by the marked boxes. In addition, the marking here also determines the colon growth direction in colomn application.
Location of the Growing Feature
You can access the growing feature from the general tab of the column settings dialog.
Examples of growing limits relative to column axes