On a public calendar, does anyone know how can I create a rule (or ??) so when ~5 different people create a new appointment, that appointment shows up on the calendar with a different color (ie: employee 1 = red, employee 2 = orange, employee 3 = yellow, etc.). Is this a rule, organize, category, etc.? Is this even possible?

I'd like to be able to look at our public staff calendar at a glance and see, by color, what employees are entering. I know they can do this manually as they create the new appointment, but I didn't know if there was something that could automate it.

Thanks!