EndNote 21: setting up Bibliography with lowercase letters after the year

Greetings!

How do I set up the following journal editor requirements in an output style?

Thank you.

The References section must be in alphabetical order by the first author and then chronological; where there are two or more papers by the same author(s) in the same year, add lowercase letters after the year, e.g., Jones, 1989a; Jones, 1989b.

It is clear on how to append letters to years in Citations.

However the original requirement was to have letters appended to year in Bibliography (at least how I understood it).
Is this possible to do this?

Thank you.