1. If you enable listener call-in, your listeners can request to call in.
2. When a listener requests to call in, you can click the green icon on the right of your listener’s nickname to accept their call. If you cannot or don’t want to accept it, you can click the red icon on the right of your listener’s nickname to refuse their call in.
3. If you disable listener call in, your listeners will receive a message saying “Call-in is not enabled by the host” when they try to call.