Don't really quite get your question, do you mean you do not know what the macro does when is it written by you?
Currently the file will be saved to this directory.
If you have already an existing file with the same name, and with alerts enabled, it should be asking you whether you want to overwrite it, this can also be handled using the ConflictResolution argument of the SaveAs method if I am not wrong.
If you want it to be saved to two locations, just add another SaveAs statement. This is just for example.