Select by ID
This action allows you to change the currently selected channel on the server by its channel ID.
It takes one integer parameter, which is the ID of the channel you want to select (0 to 65534, inclusive).
You can also select by channel name in both Relay and Blue.
An ID selection is also faster than a name selection in both Relay and Blue; read why here.
Selection can be a somewhat complicated topic; see more details under When selection is changed.