SEO and Complex Profiles are the answers......
Build the Main Dome:
Make a curved wall using the Complex Profile tool.
Draw it in a circle. You may need to practice this tool.
Build the Goofy Gable Bits and array them around the dome.
These are Complex profile arches drawn as walls.
Use Goofy Gables as SEO Operators and the Main Dome as Target - to cut the arch openings through the dome.
Command: "Subtract with Downward extrusion"
Then use the dome as the operator and the Gables as targets to trim them to the dome curve.
Command: "Subtract with Downward extrusion"
Dwight Atkinson