I have documents I use consistently and would like to be able to “pin” them to the recently viewed list. Is there a way to do this in LibreOffice.
no you can’t pin in LibreOffice - this is a dynamic list of recently used files (if you are on windows your could use Windows “pin to the task bar” feature).
Hope this answers your question.
You need an extension for that: https://gitlab.com/mauriciobaeza/zaz-favorite
After install it, see this video.