How do I SWAP a class/appointment to a different Trainer, Change Time or Date

How to move Appointments and Classes from one trainer to another AND different day.

--> From the Administrator Portal
--> Go to Schedule Matrix;
--> Click on the Appointment or Class;
--> Click 'Swap' from the list of Actions on the left;
--> You can change the date, time and trainer;
--> Click 'Swap'.