Can I add (implead) another Respondent if I respond online?
Yes. If per Rule 1-4 you wish to implead/add another signatory, there is an option to add a Respondent. Top of this page 12. An Applicant has filed against me and another member (two Respondents). I want to file a Counterclaim, but only against the other Respondent. The Applicant is an innocent party. How do I do this? Simply file a Counterclaim as you normally would so the cases are related. Your contentions will/should outline your case so the arbitrator(s) who hear the cases know that you are seeking your recovery from the other Respondent.