Essentials edition supports up to 3 hosts and lacks advanced features like vMotion and vSphere High Availability (HA).

Indeed, it can administer ESXi hosts running vSphere 6.5, 6.7, and 7.0 however the functionality of earlier versions might be restricted.

VMware vSphere Essentials Kits are for small businesses and combine virtualization for up to three physical servers with centralized management using VMware center Server for essentials.