How to expand Windows partition after installation?

So I was able to get both Mac and Windows running on my system, and it's been running smoothly. However, the guide I had followed to install Windows just said I needed around 50GB in order to install, so that is what I went with, expecting to be able to change the size later on. However, now that I have tried, I see that the option in Disk Management is greyed out, and I can't even expand in other third party programs.

How can I expand the Windows partition on my Hack (C Drive)?

submitted by /u/mohmega
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