hey, i updated our cryptpad to version v3.3.0 today.
now there is a "team"-feature we can now manage documents in a group. to be able to use these we have to work on a document together. And I can then add you to the team =)
here the link to the "invite" document: https://pad.envs.net/pad/#/2/pad/edit/YNyBhWLZ85JCIVdr9Dr23JnI/present/
add your username in the list and i try to add you to the group. =) (you need a cryptpad account)