User & Schedule Log

Hello,

I have an Admin, a Program Manager and a DJ created in my system.

I need to be able to see logs of when each of them logged in to Libretime.

In addition to that I need to see when certain files were added/removed to/from the schedule and which user made the change with date and time (Program Manager and Admin).
*[Please not this is different from adding or removing files to the server]

I took a look at zendphp.log but was not able to find what this information.
Any help would be appreciated.

I need to check and make sure that users are not accidentally undoing or duplicating the work of others.

Which log should I be checking?

There is no log of this activity although I agree it would be useful, nobody has programmed this yet. Feel free to open a feature request on github.