Hello!
Answer:
minimize
Step-by-step explanation:
You can click on the minimize button in the bottom-right to minimize the Timeline Navigator. To return to displaying the Timeline Navigator at its previous size, click Show Timeline.
The minimize button is a small, square icon with a minus sign in the middle. It is located in the bottom-right corner of the Timeline Navigator. When you click on the minimize button, the Timeline Navigator will be collapsed and hidden from view.