Hello from DigiPen! We are the facility workers of the school, and we inherited an EchoTouch. We have a preset that we like using, but it only lasts a few minutes. How do we set it to stay on longer or toggle on until its turned off. I see a setting for preset default duration, and I can go up to 20 minutes there, but not any more than that. Please send help, we are complete noobs here! Thank you so much!