ZENworks Configuration Management 23.4 Zookeeper Cluster Config

Wondering about the Zookeeper Cluster config. on our 23.4 ZCM.  We've had a couple primary server instances where a service failed and as a result and I couldn't get to the primary. Users immediately reported no icons.

Looking at the config shows only the primary server in the Zookeeper Cluster.  It it just a matter of adding the secondary server to the Zookeeper Cluster or is there a different solution?  In earlier versions (before Zookeeper) we could lose a server and the secondary would take over and no downtime.  Looking for answers.  Thanks.