To display the hierarchy of entries In the Directory Information Tree (DIT), from the Search pane click Browse to display the tree view in a separate window.
Click the plus sign (+) next to the top level entry to expand the tree. Expand the tree by clicking plus signs to see the subordinate entries. When you click a plus sign to expand an entry, that plus sign becomes a minus sign (-).
Note: Although an entry that does not have subordinate entries may appear with a plus sign, when you click that plus sign, it disappears. Entries that have no plus or minus sign next to them are leaf nodes on the tree.
Select the entry you want and click OK. That entry appears in the Root of the Search field in the Search pane.