Can fmDataGuard be used to support other types of logging requirements besides data Add, Change and Delete activity?

Yes. Many regulations or compliance policies require additional types of events to be tracked, such as user login and out, viewing of certain records or running of various reports or batch activities. fmDataGuard provides the ability to write your own types of events to the log as well, simply by calling the function DataGuard_PostCustomEvent (…). Therefore, any of the database design elements that provide a FileMaker Calculation dialog input can be used to post additional entries to the log. Note that New, Edit, Delete, Delete_REQ and tableSchema are reserved event types and should not be use to post custom events.