Modeling of indentations at “CGC Shader Totem”

Thank you, @theluthier! I’ve marked the areas where I’m wondering how to do this most efficiently and without pinching:

I think that it’s especially a question of which edges are beveled when. Above all the modeling of the topology in the lower yellow circle is interesting me. What is the best method to cut in the half-circle indentations in the upper yellow circle? And finally: How did you attach the cylinders and cones at the curved base smoothly?

Thanks, Kent, I’ll remind you during your next stream 🙂. I suppose that it’s above all a matter of doing operations in the right order. Especially making the holding edges flow around the indentation at the bottom and creating the smooth concave arc there is something I’m having problems with.