There isn't anything built into NodeXL that will create those edges for you. Given the specialized nature of your requirements (for each set of vertices on the Vertices worksheet that have the same value in a Brands column, create a set of edges on the Edges worksheet that connect those vertices), I suspect you're going to need some custom programming to get the job done. The custom program would be simple and could be written in any number of languages. If it were me, I would implement a VBA macro (Visual Basic for Applications is Excel's built-in programming language) that reads the vertices on the Vertices worksheet, compares the Brands cells, and writes the desired edges directly to the Edges worksheet.
But I don't know how to do that without a custom program.
-- Tony
But I don't know how to do that without a custom program.
-- Tony