What does sub.2/sub.3 mean in the FR? 12:40 Aug 2
Knowing what they refer to and why they're called that in the document as a whole is necessary before we can propose a translation. I don't see any basis in this sentence for calling them "2d and 3d"* as Adrian has suggested. A French court is perfectly capable of saying 1e/premier and 2e/deuxième if that's what they mean, so I would definitely want to read the rest of the text to figure out why the court said sub.2/sub.3.
Is the full term (of which "sub." is an abbreviation) spelled out anywhere in the document? I would expect it towards the top, or in any case prior to the first abbreviation.
Lacking any context, I would be inclined to think this does not mean second/third but rather, the petitioner (or claimant, etc.) mentioned below (sub.) in paragraph 2 or 3. I've seen in Belgian legal opinions references like "le fait libellé sub n° 2," meaning that the court is referring to the fact set forth below in paragraph number 2.
This case may have 3 plaintiffs listed in 3 numbered paragraphs, with 1 being the main plaintiff and 2 & 3 being involved in the litigation due to their "qualités de gérants" of 1.
* In US legal texts these are written as 2d and 3d, not 2nd and 3rd | 
peer agreement (net): +3