Generative Complete
Once you have putting in the essential elements into the design, you can utilize the "Generative Complete" feature to seamlessly finalize the rest of the design. This functionality intelligently fills in the vacant areas within the design frame.
On an extreme, you can put in just a few dots on the canvas, and let the "Generative Complete" to automatically finish the painting for you (also following the text prompt).
It is very useful in creating smooth gradient image by specifying a few color dots on the canvas.
Screenshot of "Generative Complete" in action: