There should be a separate plan for each child. If changes have legal ramifications, you should submit an amended plan to the court and ask that it become an enforceable court order. Children usually do best in an arrangement in which both parents continue to have an active role in their lives. It is critical for parents to consider and determine arrangements with the child's best interests in mind, even though they may not coincide with the parents' personal desires. The court must approve the parenting arrangement and will do so only if it finds the arrangements to be advantageous to the child and in the child's best interests.
Laws differ from state to state.
The law used to require that decisions be made by the appointed person or jointly. Now, the law allows parents to decide which parent will have decision-making authority over each major area. Parents going through a divorce will have to decide whether one or both parents will have responsibility for making important decisions like choice of school, religion, medical care, and general welfare. Some parents want to be very detailed about these future decisions, and others do not want a lot of detail. It may be in the best interest of the child that all decision-making responsibility be placed with one parent.