Queues , stop calling all members if 1 member rejects the call

[NoFate]

i have found here something interesting

HangUp Groupcall (SIP and DECT)

b ( context^exten^priority ) - Before initiating an outgoing call, Gosub to the specified location using the newly created channel. The Gosub will be executed for each destination channel. context exten priority ( params ) arg1 [^ arg1 …] argN Option b will create a new channel and you can add hangup handler in it.

post 6 and 8
somekind of string lookup and then a reject command