Easy way to add a secondary author?

[Elizabeth (Alaska)]

Is there an easy way to add a secondary author, other than going edition by edition?

I feel as if I've been doing it the hard way, but maybe I just think there should be a lazy way out.

[rivka, Former Moderator]

If there is, I am unaware of it.

[Elizabeth (Alaska)]

Thank you. At least I can stop wondering.

[Hannah]

I also have been going one by one. Couldn't figure out any other way.