I will tell you how this works in my case:

In my PC I configured a folder as shared and gave all the users full permissions over it.

From any other device connected to my network (cable or wifi) I can access this public folder and move files from/to it.

In your case, I would start sharing a folder in your PC and checking if you can see it from your NIT using File Manager.

I am sorry, but I am amateur in this issues. I hope someone else could help you more than me.

Good luck.