I have made my header a reusable element. Within it is a hamburger menu icon that when clicked should reveal a popup (menu). That popup menu is an element on the first page I created. I made that popup to also be a reusable element. How do make it that when the hamburger icon on the reusable header is clicked, it can “show” the popup. Currently the “show” workflow only allows you to “show” elements that are attached to the header itself.