Audit trail functionality

Does survey solution HQ have audit trail functionality(e.g HQ is able to keep log of user details, time login and logout,log of edited information, time the specific user download/Export data, etc from the server?)

Francis, to a certain extent yes, but the definitions of audit trail differ, so one needs to be very specific about the definitions. Survey Solutions is probably close to this definition:
as you can get individual time-stamps for individual questions.

Interviewer synchronization sessions are also logged and you can see statistics on the last session.

I suggest you explore the interviewer_actions file and paradata records to see if they suite your needs.

Best, Sergiy Radyakin