Rocket lawyer offers this free Parenting Plan template, which you can use if:
You are getting a divorce and your state requires you to submit a Parenting Plan.
You are getting a divorce or separation and want to make a Parenting Plan for your own needs.
You need to make a co-parenting agreement with someone who is not a spouse.
A Parenting Plan should, at a minimum, clearly detail custody, visitation schedules, and financial obligations. However, the strongest Parenting Plans address other important topics such as medical rights, religion, vacations, transportation, education and extracurricular activities. Essentially, you are creating a document that will serve as a map and guide for co-parenting your children until they reach the age of 18.
Legal resources for a Parenting Plan: Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA)