How Can I Create Multi-Row Floating Toolbars?

How can I define multiple icon lines for a floating toolbar?
I see that changing the toolbar width will automatically wrap icons to a second line.

What I am seeking to do is create a multiple line floating toolbar.

  • Top line may have one size of icon buttons
  • Subsequent lines may use smaller size icon buttons

I did see that similar questions have been asked in the past, but I am wondering if multiline toolbars are are now possible?


Undocked floating toolbars will become multiple rows just from resizing them.

Toolbars docked to the sides of the screen can't be multiple rows.