Add Icon to Dock
How do you add the YouTube icon to the Dock?
MacBook Pro 13", macOS 10.14
How do you add the YouTube icon to the Dock?
MacBook Pro 13", macOS 10.14
If it is a local, installed YouTube application, then drag and drop it to your Dock in the position you want it.
If it is simply a .webloc file, a short cut to a specific location— ie browser address bar dragged to the desktop— it can be added to the right side of the Dock only:
Add Icon to Dock