Different shows merged to one

F:\MCEB-TV\
.......Impractical Jokers (UK)\
..........Season 01\
............Impractical Jokers (UK) - S01E01.mp4
F:\MCEB-TV\
.........Impractical Jokers Dinner Party\
............Season 01\
...............Impractical Jokers Dinner Party - S01E01.mp4
F:\MCEB-TV\
........Impractical Jokers\
............Season 01\
...............Impractical Jokers - S01E01.mp4

https://thetvdb.com/search?query=impractical+jokers

https://support.plex.tv/articles/naming-and-organizing-your-tv-show-files/

… and…

You can’t Split anything from the Season.
Main Show Level is where those commands are.
But you might try naming and structuring first.
Worked wonders for me just now in the Triple Crown Natural Match Category.