Sender - the sender number / From of your outbound SMS
Recipient - fetch phone numbers of your leads by adding dynamic value Custom Field: phone_number
Message - Compose your message. Maximum characters are 1,224. Learn more. You can also personalise your message by adding dynamic value of your lead's full name.
When done, preview your message and finish the setup. The message setup will be sent to every Facebook user who showed interest on your ad and has provided their phone number.
For more detailed instruction, watch video tutorial here.