From the Architecture tab of the top ribbon select the “Door” tool.
Ensure the correct Door Family is selected from the drop-down box at the top of the Properties Side Panel.
Model the Doors.
Note: Alternate Doors can be used by navigating to the Insert tab on the top ribbon. In the “Load from Library” section the “Load Autodesk Family” option allows Autodesk Doors to be downloaded and used in the model. The “Load Family” option allows Doors downloaded from other sources to be loaded into the model.