Once a baseline or a baseline group has been created, you must attach it to a host or VM to scan to determine whether the object is compliant. Attaching a baseline at a higher level in vCenter Server, it will also be applied also 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 VM, proceed with the steps as follows:

1. Using vSphere Web Client, select from the inventory 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 then click OK
3. To detach a baseline, right-click the baseline or baseline group to remove and click the Detach Baseline button