This is an extension to Business Central

Why?

Define any kind of relationships between contacts; for example parent/child, head office/branch

What 

• Setup any kind of relationship from the end
• Enter it either way: for example, from the contact card of the parent or the child
• See all relationships from the perspective of the contact you are in.
• Capture all the relationships without creating custom fields: for example: teacher / student, manager / team worker, parent / child and so on.