CADWorx Plant II tab: Dimensions > Automatic 
Plant menu: Dimension > Automatic
Command line: AUTODIM
Automatically creates dimensions for a set of components that you select. Options to set the offset distance and whether to include flanges are also provided.
Options
Flange
Dimensions flange faces. You specify whether flange dimensioning is turned On or Off.
Offset
Specifies the distance from the dimension line to the component.
Selection
Starts the dimensioning process.