Can you go into CAS to set family Dynamics with sims you have already played?

"SheriSim57;d-1007761" wrote:
I was just wondering if I could set family dynamics on sims I have been playing before the Growing together expansion came out. One of my daughters plays on Console and said when she went into CAS she could not set family dynamics on sims that she hadn’t created new, it was greyed out on her already played households. She said she had to set them already in game while playing the family. Is it that way on PC too?