Display author(s) last name only in footnotes

A publisher is requiring me to use short form footnotes (last name, title, page number) and full form bibliography. Is there a way to create a style that uses only the last name of the author for a footnote?

Thank you! Yes, I’m familiar with editing the style for different outcomes in the footnote and bibliography. I was primarily interested in whether I could isolate just the author’s last name, though.

Publisher is Wipf and Stock. I’m using the SBL custom output style (attached). Thanks.

SBL custom.ens (55.4 KB)