There are many clients in countries where the Internet is not good or who are not able to enter the Internet.
Those clients might have an account, but might not have the overview of what they already signed up for.
Here you will find a page you can print for your group and provide all information they need.
It would be good if the client has this information with them, when they come to the lessons.
It looks like this and on the page are 12 Passes: