How to set different feed settings based on collections/products?
Since effective feed settings is the result of feed settings, collection level feed settings and products level feed settings, you have multiple options to adjust the feed settings to your need.
1/ Feed settings based on collection or collection level feed settings
2/ Feed settings based on products or products level feed settings
This can be done from the Products tab. These settings will be used for the products regardless of which feeds they are in.