Subconnections - linking to existing connetions

I would like to link an existing connection as subconnection <- is this possible?
The Interface allows me only to create a new subconnection.

This would allow me to consolidate several e.g. Management Websites (which are basically subconnections of a server) into a single folder and still have the connections in the correct folders.
So a Linked connection would be a better name.

Thanks,
Peter