In this video we learned how to use the one-time notification element in our chatbot flow. We created a text element and then connected it to an otn element. We configured the otn prompt and then added a confirmation message. We saved and tested the flow and found that our page did not have permission to use the otn feature. We went to our facebook page settings and requested for the permission. Once our page was approved, we tested the flow again and found that it worked as expected.