If you were to get divorced, your community property would be divided.The exact specifics of it can not always be decided to an exact granular detail beforehand.
You have two options:
1. You can have an agreed upon motion.
If you and the former spouse agree that is best and, you file a motion together asking for an order stating that
2. You can file your own motion.
If you and the former spouse do not agree, you can ask that it be ordered.
It is often better to work these things out before a divorce and to have an agreement in place beforehand.