Multiple indexes - is it possible?

Hi folks,

I've rummaged around on the net and poked about in Sigil and cannot find a solution to this issue, so I thought I'd ask here...

I'm currently 'involved' (read providing Tech Support) for an e-pub collaboration using Sigil.

The book is a refresh of a Natural History (flora and fauna) based epub2 (created with Sigil a couple of years ago) and has a large number of Latin names (over 1000) which made fo interesting spell checking, until I twigged that I could manually create/edit/check a "Latin" user dictionary.

However, for this new revised edition we're trying to provide an "Index of Latin Names" separate from the normal English "Index".

Anyone managed / hacked their way through doing this or something similar?

Any help/advice gratefully received...

Cheers!

Andy B.