Unfortunately, there is not a direct way that you can “lock down” the panels to prevent the user from moving them. However, one thing you might want to consider is to use a button that will automatically position the panels where you want them every time the button is pressed. Another thing you could use is a timer that will automatically position the panels where you want them at a specific time interval. Both of these methods involve using the X and Y data members of a Panel.
However, I would suggest that you submit a product suggestion for the next revision of Lookout to include the feature that you are looking for. Please go to ni.com/contact and then go to the Product Feedback section.
Russell G.