To create a new Connection you have to enter all fields. This are required fields.
Host: Ip address where PostgreSQL running on and you want to connect to (localhost, 123.123.123.123, consipio.de, etc.).
Port: Enter the Port where PostgreSQL Server is reachable. As default PostgreSQL have the port 5432.
User name: Enter the user name for your database. For initial Viewalyzer connection you must enter a user with database creation rights.
Password: Enter the password from your database.
Database name: Enter the database name from your PostgreSQL Server.
Database alias: Enter a unique alias name for your Connection. This alias will be shown in connection preferences, edit connections, new database and edit database.