If you have registered a group, you have the opportunity to invite new participants to join you and check the statuses regarding the payment of group members.
You can only make a global settlement for a group once. The persons who will make their registration afterwards will have to make the payment by their own means.
To invite new members, log in and click on "my group". From here you can enter the name, email address, category and start wave for those you want to invite. Guests will then receive an email with a link to finalize their registration and make the payment.