Oh, THAT search!
The first rule of indexing is that you never, ever, ever
create a single entry/subentry for anything.
That is, in your example, you would need to add:
Adding
...Fixtures
...Gondolas
...etc.
In other words, you have no idea what term a user might have
in mind when accessing your index. For example, if you have
fixtures with multiple finishes, how do you think a user might
search for "adding a chrome fixture"? Showing no other subentries
for this example, you'd have to create Index entries for:
Adding
...Chrome Fixtures
Chrome Fixtures
...Adding
Fixtures
...Chrome, Adding
Creating a truly useful Index is much more painful than many
folks realize, Phil!
Good luck,
Leon