polymer builder

Hi all, someone please guide me on how to use the polymer builder to build the soluplus triblock copolymer. It has a chain of PEG with branches of vinyl acetate (VA) and vinyl caprolactam (VC). I thought I would define a branch point on the PEG chain but don't know how to proceed from then to add the VA and VC. I have attached the monomer in the picture. Thank you.