The Dome Groove object creates an object on the dome edge by default, with a selected profile.
Click the Dome Groove icon from the Sweep toolbar .
The Parent Based mode in the toolbar is automatically active.
At the same time, the profiles to be used in the Dome Groove object are listed in the Section box .
If wanted, a different profile can be selected from the Section box.
Move the mouse over the dome and click the left button.
Dome Gutter will be formed around the dome.