Hey Tonya!
Thank you for reaching out regarding this. We are looking into ways of adding the ability to log a partner workout so the reps are shared with your partner. In the mean time people will need to select the modified button before posting. We take a look at leaderboards and modify any workouts that are logged as a partner workout.
Tonya Underwood
People consistently log workout as Rx when they do them as partners... this would allow for that with a checkmark in partner workout