Opening Files > About Adding or Deleting Viewables
  
About Adding or Deleting Viewables
You can add a viewable to the session. Depending on your data, the viewable is added to these locations:
MCAD—Selected location in the Structure Tree. If you do not select a location, the viewable appears at the bottom of the tree. You can also insert one or more viewables of different types into the root of the structure, and then merge and reposition them.
ECAD— Viewables tab of the primary panel.
You can remove viewables from the Structure Tree and keep the original node.
For data opened from Windchill, you can add viewables from a local source and work on the integrated data, but you cannot save the integrated structure locally or to Windchill. You must save the structure before adding viewables from a local source. You can save an integrated structure only as an annotation set, or save a copy locally.