The Queue(s) can be resized up to (almost) full-screen. 
You can also combine the following methods to either enlarge or compact it:
- Drag the corners to extend the Queue on both axes.
- Drag from the top and bottom to expand the queue vertically (longer).
- Drag from the left or right size to expand the queue horizontally (wider).
Alternatively, you can use this Custom CSS Snippet to maximize the Queue.