The usual way vMix saves recorded files is with the date, time, etc.
If I wish to not use this system I understand i can just delete that portion of the code in Settings>Recording.

However, during events with multiple presentations which need to be recorded as separate files, can I set an automatic sequencing for saving files - e.g. myfilename-01, myfilename-02, myfilename-03, etc., what would the syntax be?