Can a Gabai During Shiva Stand as Sgan on Shabbos. If he doesn’t take his position, is that not aveilus in public as it would be very noticeable if someone stands instead of them?
A gabbai may perform his usual function of calling the people to the torah , and reciting the Mi Sheberach.
R’ S.B. Cohen shlit”a in his sefer “The laws of Aveilus” pg. 164, in the name of Shut Yehuda Yaaleh O:CH 20, and Yesodei Smachos pg. 145, in the name of R’ Moshe Feinstein zt”l