As I am animating, I find myself using these 4 commands a lot. If it's not too much trouble, would you please add these to Keyboard shortcuts?

Animation time line right click brings up these menu
Please take a look at this image
https://ibb.co/k6LiSG

-Insert 1 left
-Insert 1 right
-Clear 1 columns
-Remove 1 columns

Thank you so much!!