Fluid Menu
Menu that cascades when clicked.
A type of menu that requires a click to reveal sub-menu items. Designed to help simplify complex navigation, fluid menus are built as an expansion on the panel menu.
This type of menu requires you to click on each expandable menu option to move to the next layer. This is to maintain compatibility with overall Confluence systems architecture, operate within Atlassian's user interface guidelines, and so that sites remain user-friendly when accessed from mobile devices where mouse-over/hover is not available.