You're speaking to continuity of care. Because I cannot be available 24 hours a day, 365 days a year, our clients are assigned a team of two midwives. When I was working full time as a faculty member, I had a team of three midwives to ensure I could teach the learners and still have a known care provider available to the person. At the outset of care, people are assigned their team of midwives, who will rotate and whom they'll meet to ensure that they have developed a relationship and they know the person they're paging at 4 a.m. when they're going into labour.
We're minimizing the number of people involved and ensuring a continuity in that relationship from conception to postpartum.