Relation between 2 sheet (not only columns)

Relation between 2 sheet (not only columns)

Hi,
I've a new question: now I would link 2 Sheets (not only columns), following I try to explain better what I want to do:
- I've the parent table, say table A (Clients)
- I want to relate table A to a table B where I've the datails of the person that work in the company (CEO, marketin manager....) with all their information (phone, email...).

Thanks in advantage
jacopo sagramoso