This section creates a discretionary power to allow statutory undertakers or other councils to contribute to the costs of a council carrying out a review under section 3 – matters affecting development. Also available is a discretionary power allowing statutory undertakers or other councils to contribute to another council’s costs when discharging specified planning functions under the Act. Finally, the Department will be able to require councils to contribute to another council’s compensation costs when that council is carrying out certain specified functions under the Act.