create relations one site to many site in traffic map

[beni]

Dear All,

I want to create relation for one site connected to many sites, for example i want to create relation between site a to site b and between site a to site k. How i can create this relation, because of error if i can create one relation between site a to site b, but i cannot create between site a to site k.
The message error : "Uncomplete form or Invalid".

Thx,