This video showcases the different features and settings that you can customize in the dock on a Mac running macOS X.
0:00 Intro
0:25 Accessing Dock Preferences
1:00 Moving the Dock & Changing its Size
1:29 Updating Other Dock Options
4:40 Adding & Removing Items in the Dock
The machine used to record this video was a 2019 16-inch MacBook Pro running macOS Catalina (10.15.7).