View the original community article here
Last tested: Oct 23, 2018
It is possible to create a new schema in the database by sending the command from SQL Runner
CREATE SCHEMA schema_name ; (Redshift syntax)
⚠️ One thing to know is that the schema may not appear in the system after the creation until a table is added to the schema!
⚠️ User must also have CREATE permission on db http://docs.aws.amazon.com/redshift/latest/dg/r_GRANT.html