With the keyboard focus on the component whose pop-up menu you want to display:
Press Shift+F10 to display the pop-up menu.
Choose a menu item:
Press the Down Arrow key to move through the menu, highlight the item you want, then press Return.
Or, type the underlined letter in the menu item's name (its mnemonic).
Or, type the shortcut key, as listed to the right of the item's name.