First you select the mirror plane and the components to mirror or copy.
To open the Mirror Components PropertyManager:
Click Mirror Components 
(Assembly
toolbar) or .
Selections
| Mirror plane |
Defines the plane about which components are mirrored. Select a plane or planar face. |
| Components to Mirror |
Defines the components (part or subassemblies) you want to mirror. - You can select from the graphics area or the FeatureManager design tree.
- If you select multiple components, you can create copies of some and opposite-hand versions of others.
- If you select a subassembly, all of its components are selected as well. You can specify to copy some of its components and create opposite-hand versions for others.
|
Click Next 
to go to Step 2: Set Orientation.