Psychotherapy with adolescents usually happens with more separation from the parents, as adolescence is a time of transition into adulthood and independence. Initial meetings are often with the young person and parents, or sometimes without the parents at all.
I provide a waiting room for parents, however, most adolescents feel more comfortable being seen alone without parental presence of any kind. It is customary for parents to drop off and collect.
As with younger children, a confidential approach is employed, with the proviso that any serious concerns for the safety and well being of the young person would be discussed with them, and then contact with a responsible adult in the young person’s life would be sought in order to keep them safe.