frsky r9mm

So I’m building a quad, and have gotten a Bn-880 and FrSky R9 mm. I was hoping someone could help connect the R9 mm to my Omnibus F4 Pro. I connected the GPS to UART 3/6 on J10 so that’s gone, and I was planning to connect the Sbus, Ground, and 5V to J7 on the Pinout, but where would I connect...