In this Business English lesson plan for adults, students watch a video about Calendly - a software designed to make appointment scheduling easier. It includes discussion questions and conversation activities about scheduling, confirming, rescheduling, canceling meetings and sending meeting reminders. Students learn some important vocabulary terms related to these topics. For grammar, students do an activity on the difference between either, neither, and both. In the cooperation activity, students can create a role play for scheduling meetings by email and phone, or write a script for a video.