Contracts and siblings

[Jenny]

I have seen a variety of contracts for people with multiple children, some refer to child(s) and other say child.
From your experience is it better to have a contract for each child or create a template designed for multiples.

As well should I write my contract in 1st or 2nd person. Such as "I" and "you" or say "the provider/caregiver" and "Parent/guardians"