when I received the Moderators handbook I noticed it had a clause specifically relating to dress code during Moderation.
without giving out to much info
section Ches, Dress Code; sub-section aleph: “…a white dress shirt, black suit and/or navy suit (pin stripes optional), polished shoes, black/blue socks, polished shoes, tie and hat…” sub-section beis “…e’Shabbos/Yom Tov and m’Shabbos/Yom Tov french cuffs are mandatory…”