Sales -> Orders

Print Invoice 
Click Print Invoice button to print a paper invoice to include in the customer shipment.

Reward Points
Click the green (+) button to add the Reward Points to the customer account and send an automatic email notifying customer.

Order Status
Change the order status to Pending, Processing, Shipped, etc.. SEE ALSO System - Localisation - Order Statuses.

Notify Customer
Check this box to notify the customer of the order status change and the order comments. 
Uncheck to set private administrator comments that the customer will not see.

Comments
Add a comment about the order for you and/or the customer to see (see NOTIFY CUSTOMER above), then click ADD HISTORY Button.