Creating an index for a big document

[HungryNico]

I am creating an index for a 500 pages document. Is there a more efficient way to add the topics and/or references for the index? I have a lot of important elements to highlight and adding the references/topics one by one is extremely tedious and time consuming.

There must be a way to write all the references/topics needed efficiently?

[Robert at ID-Tasker]

There are scripts created by @Peter Kahrel:

https://creativepro.com/files/kahrel/indesign/lists_indexes.html

[HungryNico]

Thank you. I was not heavily familiar with scripts before. Used one or two samples in the past.