To preview a hierarchy structure that has already been created, take the following steps:
Step 1
Find the table row that contains the hierarchy structure you want to preview. Under its Actions column, click the gear icon:
Step 2
The action menu appears:
Select Preview Hierarchy from it.
Step 3
Examine the various levels and nodes in the hierarchy to verify that it is correct. If you find any errors, modify your data file as necessary and then re-upload it.