After you add your friend list name will join the man and then you open the window for him to chat.
After you open a window in the side drop down there (became the downwards button) and click on send SMS.
After you create a new window to insert your friend's mobile number and place. Press the Save button after filling out the information.
To save your information in the chat window to type up the message box will open with your details. Limit your SMS will be written above the box.
Type your message in the send message box. So your message will arrive to the front.