If you have booked your learners in an upcoming video conference, you can check their names clicking on the "Manage my bookings" button in your Teacher Dashboard:
From the "Booked video conferences" page click on the link "Manage students" for the video conference you would like to review:
On the video conference details page, scroll until you see the button "Manage students":
Click on the button and you will see a list of learners that you have selected to participate:
Here you will be able to manage the list of learners you would like to invite. You can also select learners from other classes you have created on the Teacher Portal.