This looks like a great idea. There were a few times I got in trouble at work in high school because I didn't see updates my boss had made after I checked the schedule. This would avoid any of the he said/she said BS.

Can this be used for covering shifts. When I worked in a job like this, we were allowed to get shifts covered, as long as we found someone to cover it. It would be neat if this service could be used to text everyone that is eligible to cover a shift for the opportunity for extra time.

"Your coworker is looking for someone to cover their front desk shift, Fri 12/9 from 3:00 PM to 11:00 PM. Would you like to cover it?"