Create drawings from models (Creo Elements/Direct Annotation) > Modify drawings > Add and modify symbols > Symbols overview
  
Symbols overview
This section shows how to add design symbols to a drawing. The types of symbols available are displayed in the Template Browser, which operates like the Structure Browser. From here you select the symbol type, and then create the symbol in a dedicated menu. You can also define new types of symbols. Existing symbols can be modified by editing the original parameters.