In the Address Book, click the Tools menu, and then click Accounts.
in the Directory Service list, double-click the directory service.
On the Advanced tab, change the information as necessary.
For example, if the search connection times out before you get any results, increase the Search time-out value by dragging the bar to the right, and decrease the value in the Maximum number of matches to return box.
Tip
For Help on an item, click at the top of the dialog box, and then click the item.