Was thinking that the professional app should send notifications if a business desires in order to alert staff that they are running behind. I would ultimately love it if the app had a "live console" mode that if there is:

upcoming appointment, shows minutes until expected arrival, what the client's normal minutes prior or late to appointment check in is (using client database)

current appointment, shows checkin time, start time if stylist marks as active state, shows expected completion time, BUT shows timer countdown until expected completion time and percentage of current appointment and color coded background that starts flashing red in the last 5 min. flashing black and red if the next client is already here and it is their appointment time.

The purpose of this is not to annoy our service providers, but to express a sense of urgency that comes from the computer rather than depending on each other to notice these. The pile ups of a couple minutes of lateness truly add up and effect the client experience which we should all work to solve.

I also imagine this being particularly helpful for solo stylists as it would be a small amount of automated micromanagement for themselves to propel their business further (hopefully).