@wannaexit not true.
First of all most publishers make appointments to work with eachother before the field service meeting. Second people are asked if they would like to work together. 3rd children are with their parents unless their parents and the child make an appointment with another person ahead of the field service meeting. In such a case parents agreed to let their child work with another adult.
Sorry, it may have not happened where you are at but from where I am from it most certainly happens. I understand that the issue may be a regional thing.