You can add a new type to the family and change the parameters for that type. 
 This feature allows you to define an entire family of different-sized components within the project. 
Note: A new family type created in the project exists only in that project. 
To create a new family type in a project
- In the drawing area, select an element belonging to the desired type. 
 
- On the Properties palette, click 
 (Edit Type).  
- In the Type Properties dialog, click Duplicate. 
 
- In the Name dialog, enter a name for the new type and click OK. 
 
- Specify properties for the type, as desired. 
 
- To preview the new element type, click Preview. See Preview Family Types. 
 
- In the Type Properties dialog, click OK. 
 
The new type displays in the Type Selector, indicating that the new type is assigned to the selected element.