Ring Wired Doorbell 2021 edition - Jumper cable

Hello gang..new to the community here. Got gifted a ring video door bell recently. I need help regarding connecting the jumper cable to the chime. I have a second door bell in the basement in addition to the one in front. So in my chime In have wires in all 3 point i.e front,rear and transformer. The instructions say to connect the jumper cable between t and f. What about the the wire that's connected to the rear? Should I leave it as is it should I disconnect it? Maybe if I leave it there the original chime might work for the second door bell in basement but not for the front door bell.  Edit:Uploaded picture