You will be drawing a rectangle for the new morph, but you should be getting a blue guide line from the circle as you move the mouse at approx 45°.
The problem may be however that you have not drawn the original base morph from the project origin (0,0).
Not that it matters, just hover over the corner and press SHIFT+ALT and this will set the user origin.
Now activate the guide circle, move away and type X 14000 and Y 9000 and enter.
This will give the starting point of the second morph and you can now complete the rectangle and give it a height.
One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10