In order to add a saved phrase, start by tapping on the chat bubble located at the upper right corner of the app.
You will need to be within a chat window in order to save a phrase--select a conversation to work within.
Tap the saved phrases icon, which appears as ", and tap Add a saved phrase.
A popup box will display in which you can enter a phrase. Once completed, select Add.
To send a saved phrase, tap the saved phrases icon within a chat and select the phrase you would like to use. It will appear in the text box ready for you to tap send.