Setting up daily combo ticket packages with Production Creation Utility

Hello,

I am just getting started on packages and have set one up for a symposium with an optional dinner, but we'd also like to have a daily combo packages that include General Admission to the museum, with add-ons for our guided tours. We already have our GA and tour performances built out through the end of our fiscal year (March 31, 2020). Can I use the Product Creation Utility to just create the packages? It seems like it requires that I create new performances too, or at least one of the performances in the package. Am I missing something? Do I need to create one package as reference first and then use this utility to replicate it?