Insert divider in command dialog

[alex14]

Fusion 360's built-in Extrude command has a horizontal divider between the "Extent Type" and "Operation" inputs:

How can I add a dividing line to my own custom command?

I'm aware of GroupCommandInputs; these allow one to create the titled groups with a dropdown arrow with which we are all familiar. However, I'd like to create a dividing line that doesn't show a title or a dropdown arrow below it; in my case, only one UI control will be visible below the divider and having a toggle and an extra title would be a waste of space.

How does the Extrude command manage this? How can I do that with my own custom command?

Thanks in advance!

[BrianEkins · Accepted solution]

I asked the team about this and your question about having more control over how a button is displayed. Neither of these is currently supported, but they're both good ideas, and they're going to add it to their list of possible future enhancements.

[alex14]

Great to hear. Thanks Brian!