Channels allow you to Save your Queries and come back to them later. You can also

Add to Channel:
Build your queries and ‘Add’ to an existing channel. or Create a New Channel.

Update Channel:
if you have a Channel already loaded and want to update a query. Simply Click on ‘Update Channel and select the channel. You also have an option to create a new channel.

Channels:
Click on the Channels button in the operations bar and Load any of your pre-saved channels.