To apply for your Class C open licence in Queensland, you must have held your P2 licence for two years (if you’re under the age of 23).
You will automatically go on to your open licence, if you have paid a licence fee of three or more years when you are on the P2 licence.
Otherwise you will have to go back into a Queensland Transport customer service centre and complete the Driver Licence Application form (F3000) and pay the fee ($27.65 for a one year open licence) once your P2 licence expires.