To Define a Flexible Component in an Assembly
1. Open an assembly.
2. Select the component, right-click it in the Model Tree or graphics window and choose Make Flexible > Make Flexible from the shortcut menu. The Component Placement tab opens with the Varied Items dialog box open.
3. Define any of the following varied items:
Dimensions and Dimension Tolerances
Features
Components (for flexible subassemblies)
Geom.Tols
Parameters
Materials
* 
Multiple varied items of multiple types can be defined.
4. Click OK. The Component Placement tab is available.
5. Accept the placement definition, or edit it.
6. Click .