Solution
You should use the
TestStand API to indicate TestStand Engine the directory of the
configuration files . To modify in the appropiate way the Simple User Interface in LabVIEW, refer to following steps:
1. Open the LabVIEW project that includes the source code of the Simple User Interface, it is located in
<TestStand Public>\UserInterfaces\Simple\LabVIEW\Source Code. The project file si called
Build Script.lvproj.2. Open the
Top-Level.VI, and select the
"Initialize" case in the case structure:

3. Open the
Get Engine Reference.vi to apply the following changes:
- Use the SetConfigDirectory method to specify the location of configuration directory. For example in this document is used subfolder in the project location called StationConfig:
- Then, you should call the Shutdown method on the application manager, the application manager will handle the engine shutdown procedure automatically.

Once shut down, you can restart the application manager and continue using the TestStand engine within your user interface. In the Simple user Interface the start of the application manager is handled in
"Start Application" case.

Below you can find the code (LabVIEW 2019) for Get Engine Reference.vi:

4. After saving these changes, you can rebuild the executable of the Simple User Interface.