We use Grasshopper so that our 3 managers can communicate with their team of caregivers, each manager on their own phone, but using the same number. This allows the caregivers to have a single number to remember when they contact their manager, but also allows those managers to hand off conversations, when out of the office, or when covering shifts, for example, without needing to juggle multiple phones. And notifications can be scheduled so that only on-call managers are bothered, but any manager can go back and review conversations with their team.