Send it to the Application Registrar of the Planning List and pay the relevant fees.
VCAT will write to you and tell you to write to the people involved in the planning permit application. VCAT will tell you which people to write to and give you the forms you need to send out.
One or more members of VCAT decide on your application for review. VCAT decisions bind everyone involved in the appeal, except where a question of law is involved and an appeal is sought before the Supreme Court.