Creo Elements/Direct Modeling's dynamic dragging functionality provides accurate positioning of parts, assemblies, and workplanes by allowing you to drag these objects through the workspace. Direction restrictions can also be applied to permit dragging along specified axes as shown in the following figure.

Dragging the Piston Along an Axis

Dynamic positioning with the 3D-CoPilot tool

The drag mode is automatically activated when a coordinate system axis or plane are selected.