Change points for block in Rhino?

Hi! i dont include putting individual points in my workflow atm but I bought this cad-drawing that have a bunch of points in a map. I was wondering, is there an easy way to replace all the points for a block? I have 19 903 points of shops so would be great if I can make a nice symbol but im not gonna copy paste 19 903 times.

This is the script for you:

Perfect, thank you so much for your answer and time!!!