The official APA citation requires double spacing the bibliography and the apa.csl reflects that. However, Im writing a Word paper for an organization that requires a single-spaced bibliography but follows APA formatting otherwise. This is an organization I interact with alot, so I would like to create a new style, rather than manually reformat the bibliography, which requires remembering and leads to errors/rejections because of needing to manually reformat.

I copied the apa.csl in my Zotero app files, edited it for single line spacing, and added it to the available styles with a new filename, but that does not work (bibliography continues to be double spaced). I can tell Im using the edited style because I changed the title and short name and see the new style in my list of styles.

I saw another post in the forum (https://forums.zotero.org/discussion/85217/newly-added-style-not-showing-up-in-zotero-style-preview) that seemed to suggest that if I was changing a "standard style" I would need to do more than just edit the style but that post was about a different issue and didnt have enough detail on my question to allow me to successfully edit the style.

Any suggestions for how to do this, so that I end up with an APA (single spaced) and (unmodified) APA styles that I can choose from when creating a reference list/bibliography for a paper?

Im using Word 360 for a Mac with the Zotero plugin.

Thanks for any advice/suggestions.