This article explains how you can get your service and colour notes to appear on the appointment screen to view them easily without having to access the appointment.
To turn this setting on, go to Manager > Settings > Point of sale > Device
Show Notes on Calendar, (as shown below) and click Save
You will be asked to restart Phorest for this setting to take effect
Now when you enter service and colour notes on the system, they will be displayed within the appointment on the appointment screen.