Quote Originally Posted by momplus6 View Post
Honestly if the parents have a 50/50 agreement, than on Mom's week you contact her and than Grandma when the need arises she can decide who picks up and drops off, than on Dad weeks its Dad than girlfriend and he can decide who picks up and drops off. What Dad does on his weeks is his choice and vice versa.
Doesn't work that way. In shared custody cases both parents have the rights of parental decision 100% of the time. It's only the physical custody which is 50/50.

That said. neither parent can object to new partners and their involvement with the child, because an ex has the right to a new life.

If you are going to care for a child/children in this situation where parents share custody, you need a universal document from both parents with clear rules because without it, especially in the early days when there game playing/point scoring/intent to cause hurt/difficulty/etc due to anger of a fresh break. As a carer you don't want to be in the center where your action can be the "wrong" one and where you can be blamed, however unfairly, for anything. This is your business and you need to protect your rep.