I'm new to this so this might be a basic question. We are on the "Me" plan which allows for one host (me). Now I'm asked to add users and it says "The Invite Users tool allows you to onboard one or more users to the BlueJeans service. Once you have entered your invitees’ email addresses, they will receive an invitation that will allow them to sign up for a BlueJeans account, which will be billed under your group account. " Does that mean that each user has to have a full Bluejeans account costing £9.99/month?