Ability to "lock" a group to parent to prevent drag & drop

A much-needed feature, pop-up confirmation on drag n drop etc -  I would, however, leave out the option to 'do not ask me again' as some people might select that option the first time and then they would be back to the same scenario now. The extra mouse click of a confirmatory action is very minor when comparing the potential consequences of dragging one customer device group into another, especially if individual customer 'ServiceNow' or other integrations have been set up.