Hi!
Is there way to make automatically updating field for limited part of document to show when content has been edited? For example for page, chapter or section?
For example: “This chapter has been edited on 6.5.2019 at 12:00”
May be you want to take a look on Edit -> Track Changes. I think it is not exactly what you want but this is the way LibreOffice is cabable of tracking changes at a granular level. On a document level you may use field “Modified”.