https://www.gfg.com/baseball/saladafb.shtml
dropdown nav menu with submenus
dropdown navmenu
https://extensions.joomla.org/extension/style-a-design/dropdown-nav-element-for-yootheme-pro/
Dropdown Nav Element for YOOtheme Pro, by Modern Designs - Joomla Extension Directory
This YOOtheme Pro builder element adds a dropdown button or link with a list or navigation directly into YOOTheme Pro without any code, modules or shortcodes....
dropdown navyootheme promodern designsjoomla extensionelement