As you become a member of more and more Channels you may end up Muting, Hiding or Archiving some Channels. If you have hidden or archived Channels and you would like to unhide or unarchive them this can be done through Channel Management.
The "Manage" section stores all the Channels that you have access to. The active tab shows your active Channels and displays if the Channel is a primary news or secondary news Channel.
From the tabs you can also see all the hidden and archived Channels. This is also the easiest place to unhide or unarchive Channels.
You can reorder your Channels by hovering over the colored box on the left hand side of the Channel then dragging it up or down the list.