Decrescendo/Diminuendo?

So according to scholars, decrescendo and diminuendo mean two different things in Schubert's music: decrescendo means to decrease in volume, while diminuendo means to decrease in volume and slow down.
I'm reorchestrating Schubert's Unfinished symphony and I need the line that says "decrescendo" on it. Is it possible to add that feature to MuscScore?

I know it might seem a little repetitive, but we also have hairpins, which work the same way as putting a crescendo/decrescendo would, so I don't see why not.