Channel connection is a new feature which can come handy when some of the sensors with TEDS have been used with particular math channels and display widgets.
Those math channels and display widgets can now be related to sensor and not to channel anymore.

We must get the TEDS in shape so that it will contain the Unique ID number. Make sure that "Channel used" is enabled and "Lock all channel settings" must be enabled to because Channel connection option was created for locked TEDS because the TEDS is configuring the whole channel. For example if you want to TEDS define channel name the "Actual Channel name" option must be enabled in Advanced sensor settings.

Find the steps by step procedure on the image below.

Now the Unique ID should be now shown at the Unique ID column

When sensor with TEDS is unplugged the channel setup is reset to default settings.