Run a lunch time presentation to demonstrate how awesome it is, and invite all the IT staff. I'm sure you'll get plenty of help on here and I know others have done it in the past.
Can you run the portable version from a USB drive? I can't use the full version in my workplace but the USB version runs fine on Windows 10.
I feel your pain though, I would be lost without Opus at work.
I won't dare mention that I use Opus to any IT staff just in case they decide to block it. I use IT Mode when they work on my machine 