[Users] Group call pickup

[Stefano Capitanio]

Hi list,

is it possible to set a Pickup-Group in openser?
what i want is that a call directed for example to sip:voip at isp.it
is forwarded to two different users, let's say tech_assistance1 at isp.it 
and tech_assistance2 at isp.it (in parallel)
maybe I can use "rewriteuser" and "append_brach" but I can' find the 
right way!

thank you for any help,
Stefano