It can easily be done with the morph, also.
1. Select the morph to activate the morph editing cursor.
2. Click on the desired face and from the pet palette select Add polyline/Rectangle/Box/Revolved Moprh option
3. From the Info box select the Geometry method Curved (Centerpoint and Radius, Circumference)
4. Draw the circle
5. Select the circle face with Ctrl-Shift (PC)
6. From the pet palette select Push/Pull option and pull the face at the desired location.
7. Enjoy the awesome shape!
arch. ernest atanasiu
AC 10-26 INT/GER/FR on Win 10/ Win 11