Enterprise Vault Sytem mailboxes and Archiving Tasks

Hi Team, 

We are doing a POC at our customer.Exchange environment of customer is comprised of 4 mailbox server in a DAG. 

mbx1, mbx2, mbx3, mbx4. The databases has been mounted only on two servers (mbx1 and mbx3).

We have create archiving on these two nodes but it is not possible to create tasks on the others.

So How can I doing fo create task on the remaining servers.

Thanks,

Ekra