ANIMATION CHANNELS
The Channel Control Editor has two tabs. The Keyable tab is used to edit the keyability of attributes, and the Locked tab is used to edit attribute locks.
When keying an object, the state of its channels affects which of the object's channels are animated.
The keyable and nonkeyable channel states let you specify which of an object's channels are (keyable) or are not (nonkeyable) keyed when using the following methods to animate your object: Autokey and Animate > Set Key (shortcut: S key).
The Keyable tab of the Channel Control Editor consists of three columns: Keyable, Nonkeyable Hidden, and Nonkeyable Displayed.
These columns list the attributes of the current, selected object. An attribute's keyability depends on which column it is listed in. When an attribute's name is in the Keyable or Nonkeyable Displayed column, the attribute appears in the Channel Box.
When an attribute's name is in the Nonkeyable Hidden column, the channel does not appear in the Channel Box.
With the Channel Control Editor, you can manage multiple objects (even of different types) and their attributes simultaneously.
Channel Control Window........Window>General Editors>Channel Control

MOVING KEYABLE/nonKEYABLE CHANNELS
you can move any Animation Channel(s) for a Keyable state, to a NonKeyable (Hidden) state,
by opening Channel Control Window, select desired channel, and Move>> from Keyable to Nonkeyable, or vice versa.
you can also: RMB-click, in the channel box, Hide Selected, to quickly put a Channel into the hidden state.
note: you can also RMB-click a channel and choose Make Selected NonKeyable.
This will take the channel off the Keyable list, but allow it still to appear oth Channel box, (the channel will appear gray)
LOCKING AN ANIMATION CHANNEL(s)
When attributes are locked they are unavailable for editing and they appear gray in the Attribute Editor and the Channel Box.

NOTE: don't be confused between Locked and Make Selection Nonkeyable, in both cases, the channel turns gray!
To lock a channel in the Channel Box
1. In the Channel Box, select the channel.
2. Right-click the channel.
The Channels menu appears.
3. Choose Lock Selected from the menu.
To unlock a channel in the Channel Box
1. In the Channel Box, select the channel.
2. Right-click the channel.
The Channels menu appears.
3. Choose Unlock Selected from the menu.
To lock a channel in the Channel Control menu
1. Select Window > General Editors > Channel Control.
The Channel Control window appears.
2. Click the Locked tab to reveal the Locked and Non Locked
lists.
3. Select the channel and click << Move to change its status to Locked.

To unlock a channel in the Channel Control menu
1. Select Window > General Editors > Channel Control.
The Channel Control window appears.
2. Click the Locked tab to reveal the Locked
and Non Locked lists.
3. Select the channel and click Move >>
to change its status to Non Locked.
Of course, reverse that order to make something Locked that
is Non-Locked