Yes we do! CastingWords has extensive experience transcribing focus groups of all sorts and sizes. For some tips on how to get the most out of your focus group before you record a session, check out our blog post The Elements of an Effective Focus Group.
When a focus group has numerous participants we use our "group" style -- moderators and and participants are labeled as such, but we are unable to individually label everyone, as it is difficult to keep track of different voices when many people are talking.
Another thing to keep in mind is if you would like verbatim or semi-verbatim style for your focus group. Verbatim captures every utterance, including "um"s and filler words and false starts. Semi-verbatim cleans it up a bit for better readability.⬅ FAQ