Rhino for Windows Theme - Add Toolbar Tab

I am certain that I should be able to find a way to add an active toolbar as a tab to the Rhino for Windows Theme in my Rhino for Mac 5. But no amount of dragging or double clicking or right clicking seem to do the trick. I saw in a Rhino for Windows tutorial that this is done, but I could use some help accomplishing this in the Mac version.

I very much like the windows theme for the Mac application, being a lifelong PC guy, but am enjoying the switch to Mac, easier to carry to the coffeeshop as they say…

Thanks in advance!

Look here, not yet