Add 3ed network group with intergroup switch 81c

[Sah219]

Hello friends
I want yiur help to add a third group
To 81c switch with intergroub modul
But the broblem the ssgc 0 and ssgc 1 are connected to cc0 and cc1 of second group { cc shelf 0 and cc shelf 1}
Where i connect cc of third group thank you