A settling-in time gives you the opportunity to find out lots of information about a new child, their likes and dislikes, routines, favourite activities, how to comfort them if they become upset and how they have reacted when left in the care of others before. It gives you the opportunity to build a picture of both the child’s and the family’s needs.
You should encourage the parent to stay until they feel that the child is settled. Some children do take longer than others to settle, and others settle quickly but can become distressed a few weeks later for some reason. It’s vital to support the child and the family through this transition period so that the child is settled into a routine that s/he can relate to and take comfort in. You want each child to feel happy and relaxed with you.