Redshift follows the same connection requirements as Postgres with the exception of the port which is defaulted to 5439 for Redshift.
The following fields are required for Redshift:
Password - This is optional if your user does not require a password (but we strongly suggest you use one!)
Database - Tree Schema does not change databases, to connect to multiple databases you will need a multiple data stores
Jump Server - Optional, if selected traffic to this database will be routed through your jump server