Making MultiCast with Scribe

Question

Hi, I need to make a MultiCast with Scribe.
The problem is this:
We have 4 machines. 1) Is sending the messages
2) Is receiving the messages with category A
3) Is receiving the mesasges with category B
4) MUST receive all the messages (Cat. A & B)

I thought this: Make a Scribe configured in Multi mode and inside it add a Buffer store I.E.
Multi Store
Store 1
Cat A
Store 2
Cat B
Store 3
Cat A&B

But I'll send the message two times. How can I send one message, and it must be received in two differents Scribes Categories?