Hello Cristian,

thanks for reaching out to us.

With the Amelia 6.5, we introduced the new employee selection logic. 

This option allows you to choose how the employees will be selected when a customer doesn’t choose an employee during the booking process, or if you hide the employee selection option through Amelia/Customize.

The default logic is Random, which Amelia will use to randomly assign an employee to an appointment.

You can find more information on this link - Amelia Employee Selection Logic

Please, let me know if you have any other questions.