Question about multi-level TOC (in Contents) on a Kindle Touch

[Clau]

Hi. I work with a client that sends me .mobi books to work on, so I bought a Kindle Touch partially for that. Until now, I'd been using Calibre to read them. The books have multi-level TOC so I just use the Content column to browse to the different sub-levels without having to go to the TOC.

So I downloaded the Kindle version for PC until I receive the KT but I don't see the "sub-chapters" in that Content column. Since I'm not in the States, before I ship it I'd like to confirm if that's a Kindle for PC limitation only or if the KT also has it. If so, is there a way to add that feature to the KT books maybe manually or something.

Thanks