Thank you for your fast reply.
So, should I put these commands in extensions_custom.conf ?
[from-internal]
; extension 25: agent addqueuemember (for asterisk v1.4+)
exten => 25,1,Answer
exten => 25,2,NoOp( "QM: AddQueueMember (asterisk v1.4+) Agent/${AGENTCODE} on queue ${QUEUENAME} made by '${QM_LOGIN}'" )
exten => 25,3,AddQueueMember(${QUEUENAME},Local/${AGENTCODE}@from-internal)
exten => 25,4,Hangup
; extension 27: agent removequeuemember (for asterisk v1.4+)
exten => 27,1,Answer
exten => 27,2,NoOp( "QM: RemoveQueueMember (asterisk v1.4+) Agent/${AGENTCODE} on queue ${QUEUENAME} made by '${QM_LOGIN}'" )
exten => 27,3,RemoveQueueMember(${QUEUENAME},Local/${AGENTCODE}@from-internal)
exten => 27,4,Hangup