These options are referring to the deployment of hosted engine components that allow the hosted engine VM to run on a host. You can get more information from the feature page [1]. I am currently working on improving the UI around this functionality [2], so please let me know if you have any additional questions after checking out the feature page.

[1] http://www.ovirt.org/develop/release-management/features/sla/deploy-hosted-engine-hosts-via-engine/

[2] https://bugzilla.redhat.com/show_bug.cgi?id=1369827