Yes, you can book multiple video conferences for your students. Once logged into the Generation Global Teacher Portal, from your Dashboard you can click on "Book a video conference" to see the full list of video conferences available for the months ahead.
You are welcome to book more than one video conference far in advance, and indeed the more in advance that you book, the more likely that another partner school will join you for the session.
Note that if your students are booking a video conference for themselves independently, they can only book one at a time, and must wait to receive the reflections from our facilitators until they can book another one (the reflections should arrive about 24 hours after the video conference). However, as a teacher you can book multiple video conferences in advance.