Contains the sub connections linked to this session. It's possible to use variables that refer to this session's field, such as the host name, from within sub connections. This is useful for connecting to the same host with different protocols. Please see Sub Connections Overview for more details.
Sub connections are used to share properties between group of sessions (e.g. the host name). They're also used to regroup many connection types for a computer (e.g. the RDP/FTP/HTTP connection).
Sub connections are configured in the parent connection in the Sub Connections section. Use the predefined variables in the child session to get access to the parent settings. The most common usage is to reuse the host name and credentials from the parent within the sub connection.
Information - Sub Connections
Sub connections can also be added/created by first selecting a parent connection then with a simple right-click and select Add - Add... or Actions - New Entry.
You will be prompted with the following dialog: