Where are Minimize, Reduce, and Maximize for DOCUMENTS?

I have just installed CorelDraw X5 on a Windows 10 machine. There were several problems that I overcame -- but I can't figure this one out:

When I first opened Corel in Windows 10, the "Menu Bar" appeared to be blank. I then discovered that the words simply were the SAME color as the bar, so they couldn't be seen. I fixed that by creating a new bar called "Menu Bar 2" and put all the commands in that new bar. It worked just fine for all the commands EXCEPT ONE:

How do I get the command that gives me the choice of minimize, reduce, and close my current document? The one that's usually up in the upper right corner of the screen (under the main Close (X) command). I don't even know what that command is called! But when I'm working with multiple documents, I need to be able to minimize the current window I'm working on to see other windows..