Why use default replies?
80% of the questions you will receive have already been answered at least once. In such cases, you can either respond with a documentation link or use one of your default responses.
How to create a new default reply?
Go to Conversations. At the bottom of the screen, on the right, click the icon Default replies then "Create".
How to access default replies
In order to take advantage of your default replies, you simply have to type in a hashtag (#) using the keyboard combination Shift+3 and start typing any keywords (beginning of default reply or its title). A small default reply search box will appear, as you can see below:
Just the reply you want to use with the keyboard or mouse and it's will be pasted to the message.
It will save time of responding and help you to assist more people in short time period :)