In order to use a Template when sending an SMS message from any message view screen, click on the button labeled USE TEMPLATE.
In the corresponding pop-up, click USE by the template you want to send.
From SMS -- View Messages, If you’re sending something that corresponds to a particular order, select it from the orders list that appears, or hit 'SKIP'/'FINISH' to send plaintext!
The message will load into the ‘Type Message’ textbox and you can click ‘Send Message’ or ATTACH FILES to load an image for video.
Please Note: It will load into the box with the replacement values showing, but will send like normal: