To add a sub-model to your parent model, click Model->Settings. There is a tab titled "Sub-Models".
Add - Click the "Add" button to browse for new sub-models and add them to the list.
Delete - Select a sub-model and click delete to remove them from the list.
Move Up - Select a sub-model and click "Move Up" to move it higher in the loading list.
Move Down -Select a sub-model and click "Move Down" to move it lower in the loading list.
