Hello, this is a bit of a strange one.

We are trying to figure out how we can categorize certain activities under Headings in a table of contents. For example some activities may be categorized under Infrastructure and some may be categorized under Parks.

However, in some instances the same activity will be both an Infrastructure activity and a Parks activity. We want a table of contents that looks something like this:

Infrastructure
Activity 1
Activity 5
Activity 6


Activity 8

Parks
Activity 2
Activity 4
Activity 5
Activity 8

In this example, Activities 5 and 8 need to appear under both headings. I know how to add more than one table of contents to a document using Bookmarks, but you would need to be able to use the same Bookmark in multiple places.

I wondered if you could use Table of Contents Entry fields, but I can't see how I could make that work.

Does anyone have any suggestions?