Creating Add-Ons for Appointments

Hi! I want to use this plugin for a party planning company. Is there a way that I can create “add-ons” for users when they’re booking parties? We plan to have five packages for them to choose from plus a section for them if they would like to add anything extra to their package (i.e. popcorn maker, bounce house, etc.). Is there a way to do that?

https://www.ads-software.com/plugins/appointment-calendar/