Once you have created a node tree diagram, you must associate the diagram with an IDEF0 model.
To associate a node tree diagram with an IDEF0 model
1 Open the IDEF0 Model definition that contains the Operational Activity that you want to decompose.
Normally, you decompose the Operational Activity that is drawn on the model's Context OV-5 diagram, but this does not have to be the case. The IDEF0 Model definition can be opened from the explorer (in the All Methods tab, expand the Definitions group and search for “IDEF0 Model”) or from in an OV-5 Activity Model diagram (open the OV-5 diagram and select Edit, Diagram Properties, then click the Definition button by the Model (IDEF0 Model) field).
2 In the IDEF0 Model definition, click Choices next to the Node Tree Diagram (Node Tree) field. The currently existing Node Tree diagrams in your encyclopedia are displayed in the dialog, including the one you just saved.
3 Drag the node tree diagram to the Node Tree diagram (Node Tree) field.