It would be great to be able to define the size of the embedded PowerApp placed into a Fast Tab in Finance & Operations. An example is a recent App created that is the same width as a Tablet app but only 300 pixels in height. When this is embedded into Finance & Operations we only have a choice of either a Narrow or Wide app, which displays a large amount of whitespace at the bottom of the app before the next Fast Tab. It would be great to set the height to 300 pixels to reduce the amount of whitespace visible.