If you have a term deposit, you have 7 days after the date of maturity to provide instructions. If you have a Negotiable Interest Term Account (NITA) you will need to provide instructions on the day of maturity.
If you do not give us instructions at maturity, your investment will be reinvested for the same term (or the closest available term) at the applicable standard interest rate for that term at the time, not a special interest rate (which may be higher).