Can I have Blu-Ray extra sub-catagories?

[Ecotone 0]

I have several seasons of "Game of Thrones".  On the Blu-ray discs there a several extras:

 

Auditions

Character Profiles

History and Lore

Clips

 

I would like each category to be separated in Emby but I don't see a way.  I put each group in its own folder an put all the folder in the Season 0 folder under game of thrones but in Emby when I click on "Specials" all the videos show up as episodes with no sub-categories.

 

Is there an easy way to group these files into sub-categories?

[Deathsquirrel 745]

There is nothing I know of that directly supports this but numbering can address it.  Start your episode numbers thematically.  S00E100 is your first Audition, S00E200 is your first character profile, etc.