To create a new connection please use the New Connection wizard.
It is also possible to duplicate an existing connection. This is helpful if the new connection has similar connection parameters:
Select the connection you want to duplicate and select Copy Connection from context menu or use the Strg-C shortcut.
Afterward select Paste Connection from context menu or use the Strg-V shortcut. Observe the new connection, prefixed with "Copy of ".
Rename the connection to your needs.
Modify the connection parameters to your needs.