At AL, we do not use the Report Abuse screen to report disruptive fellow clan members, neither Jagex rule-breaking.
If you spot a fellow clan member breaking either AL's or Jagex's Rules, please take a screenshot and send it to a Leader or a High Council member. You can report any clan member, including ranked staff, but do not do so without any proofs.
When reporting, please refrain from doing so openly via forums. We ask you to PM a high ranked clan staff to do so.
However, feel free to report any non clan member who's breaking Jagex Rules via the Report Abuse system.