An auxiliary element is as element needed in the model but not necessary to be visible in the Model Browser. Usually some profiles are marked as auxiliary and are not displayed by default in the model. You can mark the element in your model as an auxiliary as well.
To mark an element as auxiliary
Select the element in the Model Browser.
In the Properties tab, select the Tags tab.
Set the treat AsAuxliaryInOwningProjecttreatAsAuxliaryInOwningProject tag value to true.
Setting the tag value.
The element marked as auxiliary is visible in the Model Browser in an option Show Auxiliary Resources is selected in the Options.
The Options drop-down list.
You can specify all auxiliary resources are shown in the model by default by specifying the Environment Optionsof your tool.
To show auxiliary resources by default in your model
On the main menu, click Options > Environment.
In the search box, type auxiliary. All auxiliary resources related properties appears in the options list.
Set the Show Auxiliary Resources property value to true.
