There is a restriction that when you right-click on the icon, there can be a maximum of 6 items. Therefore, it is not possible to display 6 items in addition to the standard summary and translation features. https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/menus/ACTION_MENU_TOP_LEVEL_LIMIT
When you right-click on a web page, the menu has a hierarchy, allowing for more than 7 items. If you want to switch between having a selection or not and operate it, please right-click on the web page.
