When you auto calibrate, you will see an aim point stack out to 80 yards based on the speed you provide and ballistic algorithm calculation.
To edit a calibrated range, go to Settings > Profiles > Active Profile > AimPoints. Here you will see you can add fixed aim points and add or edit calibrated ranges in the list. Select the range you would like to re-calibrate and select “OK”. You can also adjust your bow speed and it will reset your aim point stack to your new speed if you desire.