My district recently started using Classroom for Chromebooks and I had a feature request. Can you please make a way to increase the time for screen lock? I use this occasionally but it's pretty limited since it only locks screens for 5 minutes with no way to adjust the time to be longer. It's kind of clunky to want to talk to the class for 10 or 15 minutes but have to keep coming back to the program to start the screen lock again. Also the students jump right back on their screens when the timer runs out and then it really interrupts the lesson flow to keep having to start the lock and get the students focused again. Please add this feature, it seems like this would be a standard basic feature but it's not available.