Hi Jim,
afaik there is no such a guide available from F5.
You have basically to see the Azure based VEs the same way you would create a cluster on On-Prem Environments. Just the missing L2 capabilities of Azure are getting replaced with those /31 bit VS instances (in Azure IP-1 gets assigned to Unit-A and IP-2 gets assigned to Unit-B) and a Azure-LB in front of those IP-Pairs to perform Health-Monitoring which system is active and finally failover if needed.
Once a got it up an running you simply operate a usual and fully featured Active-Passive VE cluster with config and session state sync. There is basically no difference between OnPrem and Azure anymore…
Cheers, Kai