On the first screen you may select an institution.
Then, at each level (there are seven in total) you will find information concerning the entities.
These normally comprise a certain number of individuals followed by a certain number of subordinate entities (the next hierarchical level).
By selecting one or another you can browse through the whole Directory.

The highlighted 'Back to parent entity' found at the beginning and end of the list allows you to go back up a hierarchical level.