Assembly Design > Using Assembly > Working with Assembly Components > Assembly Operations > Working with Assembly Features > To Create an Assembly Feature
  
To Create an Assembly Feature
1. Open or activate an assembly.
2. Select a feature from the Datum or Cut & Surface groups.
3. Define the feature. These may be:
◦ Pipe and cosmetic features
◦ Features that remove material
◦ Datum features
 
* When you create assembly datum curves at the intersection of surfaces, you must select assembly surfaces or features. You cannot reference part surfaces.
◦ User-defined features that do not add material