Once a baseline or a baseline group has been created, you must attach it to a host or VM to scan and determine whether the object is compliant. By attaching a baseline at a higher level in vCenter Server, it will also be applied to child objects. You can attach different baselines at different levels if you need to apply specific baselines to specific objects.

To attach or detach baselines or baseline groups to hosts or VMs, proceed with the following steps:

1. Using vSphere Web Client, from the inventory, select to view the object level on which you want to attach the baseline or baseline group and select the Update Manager tab.
2. Click the Attach Baseline... button to select the baselines to use from the list and then click OK.
3. To detach a baseline, right-click the baseline or baseline group to remove it and click the Detach Baseline... button:

Use the Hosts and Clusters view to attach baselines to ESXi hosts, and the VMs and Templates view to attach baselines to VMs.