How to represent a capoed score?

I transcribed a score for a guitar with a capo at the 3rd fret. The standard notation looks correct, but when I go to generate linked tabs, they're all wrong because Musescore is assuming I'm using an uncapoed guitar. I tried transposing the score down 3 semitones via Transpose->By Interval->Minor Third, and that fixes the tabs but now the standard notation is all screwed up.

How do I "tell" Musescore that a staff in standard notation represents a capoed fret, so Musescore knows to correctly generated linked tabs?

From what I've read, there used to be a "capo" field under part properties, but I'm using Musescore 4 and that feature seems to have been removed.