I apologize that we were not clear on this parameter in the documentation. We will update it to include more details about “userlevel”.
For userlevel, there are 3 available options you can pass:
User - The user can only view the books they own
Auditor - The user can view the books they own and they can view other books in the same group (they will come in with usertype “view")
Group Admin - The user can view the books they own and they can view other books in the same group (they will come in with usertype “mod")