You can use Active Directory Users And Computers to modify the properties of multiple accounts simultaneously. Any changes you make to the property settings are made for all the selected accounts.
You can select multiple accounts by doing the following:
Select multiple user names for editing by holding down the Ctrl key and clicking the left mouse button on each account you want to select.
Select a range of user names by holding down the Shift key, selecting the first account name, and then clicking the last account in the range.
When you’re finished selecting accounts for management, right-click to display a shortcut menu. The following options are available:
Add To A Group. Displays the Select Group dialog box that ...