A basic answer could be to know the maximum number of splitters you will need, and at runtime change the position of the splitters as needed.
Basically, imagine the multiple split views in your example as hidden items, not items created at runtime. So when prompted by the user, the splitters will change position, thus revealing the hidden items.
Or, you could make use of Subpanels instead of splitters. A set of subpanels can be created and resized/positioned dynamically as needed.
Using Labview 2022, Windows 10
