1. Click on "Inbox" in the header menu. 

2. Choose the the guest whose message you want to edit or disable from the list on the left. 

3. Scroll down to the bottom of the message thread and click "Show Scheduled Messages". 

4. Click the "Actions" button on the bottom right of the message you want to change. 

5. You can choose to edit that particular guest's message, edit the rule, disable it, or send it immediately.