Pop-Up Staff Reminders

It would be awesome to be able to add admin staff reminders that would pop-up at a given time. They could add their own reminders or I could send them tasks that they could receive while working. They could snooze it, mark it completed or reschedule the reminder. It would be fabulous for me (the owner or manager) to get a done or rescheduled notice by mail to keep track of the office workflow.....HUGE bonus this would be! Kind of like a task manager - to do list. Even cooler would be a company post that the head could write to the team globally. so happy if t5his could happen!