Hey boys and girls.
I’m trying to add events to some of my animations, but all of the animations are Read-Only.
I have tried duplicating the animations to ‘unlock’ them, but it doesn’t work - they remain Read-Only.
What can I do? 
When you duplicate the animation, it will create a separate animation clip asset. Make sure to assign this asset, not the original one in your FBX file, to your Animator Controller or Animation component.