Listing movies in order

Hello all
Very new to Plex. Still struggling with terms and what things are called.
I have loaded most of my media onto the server (Version 1.3.3.3148 on a Pi3).
I have noticed that my various movies appear in title/name order and not the order of the files themselves.

IE. I have the Harry Potter collection that I have ripped and put on the server. I have named the files like so “Harry Potter 01 - The Philosophers Stone” and “Harry Potter 02 - The Chamber of Secrets” etc.

But when I go to my DLNA compatible smart TV to access the movies, they are all there, but they are in name order.
I have noted that the same is for my TV Series as well. And whilst I have followed the naming convention, each episode is listed in name order.

How can I resolve this?

Regards

Fred

Thank you for the comments.
I have changed the file names as suggested. However the movies still show in name order only and not the order they should be shown/screened in.
TV Shows are now in order, they show Eyy then the title. But I can live with that.
Regards
Fred

Hi, and thank you for that.
I had managed to work out that Plex does have a “Sort Title” in the editor, so I have changed that to reflect the proper order of the movies.

As for the Plex setup and function on the Pi I am reasonably happy. At least it isn’t crashing every other day like others have done for me in the past. And it is so lightweight (small and uses little power) that it suites my needs very well.

Regards

Fred