I thought I had this configured correctly, but it is still not working. We have multiple hunt groups configured with agents/users in each hunt group. As it stands, if an agent puts a customer on hold, they then start receiving additional hunt group calls that are waiting in queue. What I want is the agent to be able to place the exiting call on hold, deal with whatever they need to deal with for this holding customer without getting additional calls while on hold. Then, when ready, complete the hold call an move on to the next queue call. Can someone please assist ? IP Office 406 running Avaya Manager 6.2(4)

You can go into the user>Telephony>Multiline Options. There should be a tick box for "Reserve Las CA". If it doesn't, you would need to put "RESERVE_LAST_CA=" in the users source number.

Then you just give them 2 CA buttons. they will be on the first, and if enabled, will reserve that last CA for outbound only...