How can I save a file to a wifi network on my tablet?

[AC Question]

I'm running Android 5.0.2 on my tablet at work. I have HCell spreadsheets by Hancom that I use for inventory at work. I want to save the inventory to a place on the network so everyone can access it in real time, instead of having to email it. I don't see a way to do this. I installed several file sharing apps and a network browser, but none were able to hep very much. Is there a way to do this? Thanks.