I'm finding it a fairly slow process to find the last 175 dialogs/tabpages in the LibreOffice UI. I have the full list of identifiers, and it's generally not a difficult process to find how to activate any individual dialog from the UI but in the aggregate it takes time and breaks the development flow if I have to stop/start to find the next one to convert.
So, you can help :-) This FindDialogs wiki page contains the list of identifiers and some hints as to how to find them in the source and in the help documentation. That's generally sufficient to determine what dialog they describe and how to launch it.
Filling out those remaining blank "how to activate" entries will speed up the conversion process.