No option to add "Control Playable Asset Clip"

I am using Unity 2019.2.11f1 on MacOS 10.15.1.
In a timeline, I’m trying to add a Control Track on my main animation track. After creating Control Track, I can’t find the option to “Add Control Playable Asset Clip”.

There is no error in the console. What am I missing here? plz guide.

You should be able to use the ‘Add From GameObject’ option, or simply drag and drop a gameobject or prefab on to the track to create the clip.