Thanks for reaching out to us!
You can find these within the browser-based editor for desktop. It can be found by clicking the last icon within “Start from Scratch” at the top centre of the editor’s Start page, or from the last tab on the left bar “Stock” when editing an image. On some smaller screens this last icon may not be visible (it may run off the screen) – this is an issue we’re aware of and will be fixing very soon.
Let us know if you have any further questions.