When parents split up, they have to make a lot of decisions.
First, they have to decide on custody and visiting rights, in other words, who their kids will live with and how that will work.
Examples:
Then parents have to decide how much money one parent has to give the other to help pay for things their kids need. This is called child support.
Parents also have to decide how they will divide their property (the things they own together). For example:
Each parent may have a lawyer. The lawyer's job is to help them understand the law on their parents break-up, their separation or divorce, and to help them do what they think is best for their kids.
If parents can't agree on the things they need to decide, they have a couple of options. They can go to a mediator, and use mediation to reach an agreement. Or they might have to go to court and have a judge make the decisions for them.