An incidental demand may be filed without leave of court at any time up to and including the time the answer to the principal demand is filed.

An incidental demand may be filed thereafter, with leave of court, if it will not retard the progress of the principal action, or if permitted by Articles 1066 or 1092.

An incidental demand that requires leave of court to file shall be considered as filed as of the date it is presented to the clerk of court for filing if leave of court is thereafter granted.