Hi @chrysstyann,
welcome to the Qubes-OS world.
When you add a launcher you can add multiple items, this creates a drawer (a kind of folder). See the official XFCE launcher documentation, and use the plus button to add the multiple items.
If you want to do the same but no manually, you can explore the Script panel launcher with multiple items XFCE forum topic.
But finally, I suggest the Whisker menu with its search area, install it and map it to a keyboard shortcut.