Once the default communications have been updated within the Company Settings, employees will then be able to specify how they would like their preferred communication method to be for receiving shift reminders, offers, and leave requests as well as how they would like to receive their roster.
This can be done by either the Administrator or the employee themself. Simply select the Employee profile from the Employees page, and then going to the Alert Preferences section of the Details tab. From there, just click on either the email or text message icon to select the preferred communication method for each type of communication/alert, and click Save.