Joint Physical/Legal Custody-Support Question

For the life of me I cant find any type of child support calculator when Joint physical/ legal custody is the case. It is made clear that in the state of NV support is still required and provided by the parent who makes the higher income. However I also read that factors such as how much time spent, medical insurance, etc will also be factors. But there doesnt seem to be any specific calculator or formula to use where joint custody is the case. Can someone help me out with this. We are joint filing ourselves. So finding this information to fill out that portion of the forms is needed.

You might then call the child support enforcement office in your state; they can be quite helpful normally/

or maybe somebody else here has an answer...