Do you want to use your Finder’s toolbar as your additional Dock?
Putting Icons on Finder’s Toolbar
It’s really easy to put those applications’ icon onto your Finder’s toolbar, you only need to Drag icons one by one to your Finder’s toolbar, Hold on for a second or two until the square brackets appear and Release it.
Taking Off from Toolbar
When you’re getting bored with those icons on your Finder’s toolbar, you can easily take them off by Pressing Command followed by Dragging the icon off the toolbar. It’s that easy.