Can't view animation in the Inspector?

When I try to edit properties of actions/animations in the inspector, it’s all greyed out. How can I fix this?

If this is an imported animation (not made within unity) then unity sets it to read only to protect it.

If you wish to change it, make a copy of it (Ctrl+D) and the copy should be changeable.

Once you did the changes you want, apply it to the model instead of the original animation.