The difference between child support and child maintenance is that child support is financial support for children under the age of 18 whereas child maintenance is financial support for adult children over the age of 18.
There are strict laws about taking children overseas. If you want to take your children overseas, you should try and reach an agreement with the other parent. A family dispute resolution service may be able to help.
A financial agreement is similar to a contract as it stipulates how property is to be divided between the parties. Should you and your former partner agree on a property settlement you can prepare a written agreement in the form of a consent order and then seek approval from the Court.