If you want to define multiple modeling entities—for example, a series of loads, constraints, and so forth—relative to a particular coordinate system, you can set that coordinate system as current. You can set an existing coordinate system as current using Home > Set Up > Current Coordinate System.

When you set a coordinate system as current, Creo Simulate uses it as the reference coordinate system for all entity creation unless you explicitly select a different coordinate system when you define the entity. If you do not set a current coordinate system, Creo Simulate will treat the WCS as the current coordinate system.