AWS RDS Multi-Tenant

Hi, I am hoping to start using RDS Oracle with Multi-Tenant support(CBD), but I am struggling to create another PDB (a clone of the first PDB ORCL) using the master user "admin".

CREATE PLUGGABLE DATABASE ORCL1 FROM ORCL Error report - ORA-65040: operation not allowed from within a pluggable database 65040. 00000 - "operation not allowed from within a pluggable database" *Cause: An operation was attempted that can only be performed in the root or application root container.

If I try to switch to root

alter session set container=CDB$ROOT Error report - ORA-01031: insufficient privileges 01031. 00000 - "insufficient privileges" *Cause: An attempt was made to perform a database operation without the necessary privileges. *Action: Ask your database administrator or designated security administrator to grant you the necessary privileges

I have also tried another user and tried to assign the privileges for both of the above but I get a permission denied. Has anyone done similar?

Thanks