Allows you to specify whether the selected component drives the position of an assembly sketch, or if an assembly sketch drives the position of the selected component.
For more information on positioning parts using assembly sketches, see the Assembly layouts Help topic.
Note:
Assembly sketch geometry can be associatively linked to drive the creation of ordered part geometry only.
Component Driving
Specifies that the selected component drives the position of the assembly sketch. When you modify the component, the sketch will update.
Sketch Driving
Specifies that the position of the selected component is driven by the assembly sketch. When you modify the assembly sketch, the component will update. When you set this option for a part, it is with respect to the current sketch. If relationships are available, the part can be driven by or drive another sketch.
When you set this option, the symbol for the assembly component in PathFinder indicates that the position of the component is driven by the assembly sketch. 
Align Face
Aligns the face you select to be parallel to the reference plane on which the assembly sketch lies. This allows you to apply the relationships you want between the sketch and the component.
Lock Alignment
Locks the alignment of the component to the current orientation. When you set this option, a relationship is added to the part that prevents you from using the Align Face option to realign the part with respect to the reference plane on which the assembly sketch lies. The part is locked parallel with respect to the sketch plane and the part face you selected. The part can still move and rotate. This can make it easy to fully position a part using one sketch. You can unlock the alignment of the part by deleting the relationship using the bottom pane of PathFinder.