Connecting Select Fields and CMS without coding

I was wondering If anyone knows how to connect two select fields without using coding, or to connect select fields to CMS without coding.
It should look like this in the end, and the select fields will have multiple options.
Screenshot from 2022-07-06 08-18-10

The total should be based on both of the select fields and what the user chooses

I think I have a similar question.
Within one collection, there are two multi-lists that need to be connected to each other.
e.g. We have multiple events per year. Within an event collection item, I can select multiple courses taught at that event, but for some courses, the default instructor may change for a specific event instance on a specified date.