After selecting Services, Adding a new service, selecting KVM and the latest release, you should reach the KVM configuration menu.
There are three software types available (see also the software.cfg).
Default will install a single KVM on an available node partition, whereas
Resilient will instantiate the single KVM in at least three different physical locations and backup/restore the KVM in regular daily intervals. The
Cluster KVM behaves similar to an ERP5 cluster. It does not offer resilience, but to deploy many VMs within the same service to create a network to link them together. Proceed to continue and request instantiation.