Create a Reverse Link
To create a reverse link:
While in Edit Mode, select the Floating Index object and the objects you want to create a reverse link from.
From the Edit menu, select Linked Indices - Create Links.
For each possible link found, a dialog box appears asking you to confirm the creation of the reverse link.
Click Link.
Note
A reverse link can only be made with an object containing an index over the same set as the index in the Floating Index.
When you just select the Floating Index, you will get the option to make reverse links with all possible objects.
Learn more about