Hi John,
The problem here is that we use the "FormBorderStyle.SizableToolWindow" Form style for our floating tool window, and this is drawn/handled by Windows. There isn't an option for that style of Form to show minimize/maximize buttons.
The only way to add that would be to make a custom title bar and use that instead or alternatively perhaps allow an option to use regular size captions (FormBorderStyle.Sizable), which do allow minimize/maximize buttons.