is it a movie, or a tv mini series?
for movies you can use
- moviename (year)-part1
- moviename (year)-part2
then plex will combine and play them seemlessly (but the should be matching file types and codecs.
for series, it would be episode format
- seriesname (year) - s01e01 - episodename
- seriesname (year) - s01e02 - episodename
