To add the DO326A Core Profile to the System Engineering project
Open the System Engineering Project(SEP) in the modeling tool.
In the main menu, click Options > Project Usages to open the Used Projects dialog.
In the Used Project dialog, click Use Project.
In the Use Project dialog, select DO-326A Core Profile.mdzipand click Next.
By default, the Select project and From predefined location radio buttons and the <install.root>\profiles path are selected in the Use project dialog.
If necessary, modify the Accessibility and Load Mode parameters.
Click Finish.
If you have disabled the Show Auxiliary Resources command in the Containment tree, a Question dialog appears to help you enable it. Click Yes to see the Auxiliary resources from the used projects.