Editing a dynamic group
You can change the properties and criteria defining a dynamic group at any time. Changing the properties for a dynamic group is limited to editing the group Name and Description. Changing the defining criteria may result in changing the membership of the group. As is the case with all dynamic groups, the membership of the group is re-evaluated each time you perform an action on the group.
For more information, see Editing properties of a dynamic group and Editing the defining criteria of a dynamic group.