Go into the actual toplevel vi's properties (by right clicking on the vi's icon and selecting VI properties. In the properties there is a selection "Window appearance", which has some radio buttons, one of which is "custom". After selecting that, click the "customize" button, "deselect" all the other buttons except the "show run button", close out of the properties windows, save the vi. Open the application builder and there is a tab called "VI settings" which
has check boxes for the various VI's behavior, one of which is "Run
when opened". Now unchecking that will stop the autorun feature. Of course, you will have made sure that your highest level vi has a "stop" button, or some other means to terminate your program.
Good Luck,
PutnamCertified LabVIEW Developer
Senior Test Engineer North Shore Technology, Inc.
Currently using LV 2012-LabVIEW 2018, RT8.5

LabVIEW Champion