How are all the peo[ple in The Slap related?

I have just finished watching the second episode in this miniseries and I just am not sure who is related to who in tis family? Hector and Quinto’s character are cousins. But I am not sure how Gary and his looney wife are related to them all? Uma Thurman is just a friend. Are any of these characters brother and sister? I can already see where this all leads. Really good show.

Assuming they haven’t mucked about with the relationships set up in the book too much:

Hector and Aisha, married, with children Adam and Melissa. Hector’s parents are Manolis and Koula.

Connie works for Aisha, and Hector is having an affair with her as well.

Harry, Hector’s cousin, and Sandi, his wife: Rocco is their son.

Rosie is Aisha’s friend; Gary is Rosie’s husband; Hugo is their son.

Anouk is Aisha and Rosie’s friend.

I think those are all the main ones.