Hi thanks for the update. You can use Lepide Auditor for file server. This is a best server monitoring tool. This tool would help in solving all of your queries and moreover it would help you in generating the report.

File modifications, Shared folders etc at every level of steps your activity would be monitored by Lepdie Auditor for File Server.

You can download the tool from the given link..

http://www.lepide.com/file-server-audit/

And moreover we had the help manuals over there to help you understand the tool more.

Connect back for anything else you need.

Thanks.