Messages can be scheduled from the message center using the Send Later function.
Go to Messages.
Click New Message.
Decide who you want to send it to and type out your message.
Click Send Later.
Confirm a date and time.
To view your scheduled messages later, go to the Scheduled Messages button in the Message center.
*Keep in mind if new employees are added to your employee list in the time after the Scheduled Message was created, you will want to go back to the Scheduled Message and add any new employees to the recipient list. It will not auto add the employees to the recipients list.