Singular nouns, even when they end in s, get an apostrophe s to make them possessive in English. That is how it is. You do not get to ignore this in your business report because you think that rule is stupid. I don't care if it looks funny to you, that's how it works (for this type of writing, we do not play fast and loose with grammar for self-expression, it's just not done). This is for public consumption, not internal, and that's why I'm editing it in the first place.
ETA: Telling me you aren't going to change it doesn't work either, because it goes through me to get to the publisher and I will not send on anything like that. That would be on me, and nope.