You can use Intent Datums such as Intent Axis, Intent Point, Intent Plane, and Intent Coordinate System in assembly component placement and constraints.

The sample code in the file UgAsmcompConstraint.c located at <creo_toolkit_loadpoint>/protk_appls/pt_userguide/ptu_asm demonstrates how to assemble a component into an assembly using intent point and intent plane, and how to set constraints after assembling a component using intents.