Collection OptionsLibrary SelectionOn this pageSelecting Libraries Library labels are pulled directly from Plex, so renaming a library in Plex updates the choices shown here. Media-Type Detection & Messages Custom lists sources trigger a quick analysis to determine whether the list contains movies, TV, or both; you can still create collections for non-matching libraries, but a warning will be shown. Multi-Library Considerations Selecting both movie and TV libraries unlocks separate template fields, letting you tailor names per media type. Poster uploads are organised per library, so picking multiple libraries enables the per-library poster actions.