To use baselines and baseline groups, you must attach them to selected inventory objects such as container objects, virtual machines, virtual appliances, or hosts.
Although you can attach baselines and baseline groups to individual objects, a more efficient method is to attach them to container objects, such as folders, vApps, clusters, and data centers. Individual vSphere objects inherit baselines attached to the parent container object. Removing an object from a container removes the inherited baselines from the object.
For a detailed description of the procedure, see Attach Baselines and Baseline Groups to Objects.