PerListen

New lock feature that allows all settings except volume to be locked after calibration to prevent accidental changes to crucial settings. Can lock all subs instantly on the "master" page OR each individual sub as you move through calibration on the "Setup" page. This allows you to lock an individual sub during calibration and then move on to the next sub until all subs are calibrated without accidentally making changes to previously calibrated subs. The lock symbol will show up in each individual subs menu. Backups are added so you can save as settings into multiple config files that lives on the App device. These can be recalled as needed if trying different setups. Fixed some bugs in the grouping function.