Can I have mixed mesh (trias and quads) using any of the mesh components in Grasshopper

I am trying to create a beaded plate in Grasshopper. Is there an option like stamps to easily create the beads on the plate? Also can I have a mesh with a mix of quads and tria elements?
Also in the attached file I have created a bead and trimmed off the plate surface intersecting the bead. But the geometry is distorted as shown. Can I get some help on how to get a smoother geometry.