Q. Is one allowed to seat on the chair of an Eishes Chover?
A. Shaarei Tzion quoting Horav Chaim Kanievsky Shlit’a (Hilchos Eishes Chover 17 p. 278) rules that another woman should not seat in that chair.
A story that illustrates the importance of this mitzva is told that the wife of Horav Boroch Ber Leibovitz Zt”l once came to Radin, to meet the Chofetz Chaim, she immediately entered the Yeshiva to look for him. The Chofetz Chaim was then delivering a Shiur to the entire Yeshiva, when he saw and recognized her, he stood giving her due honor. As a result, the complete Yeshiva also stood up in her honor. (Toldos Chofetz Chaim 3: p, 857).
Rabbi A. Bartfeld as advised by Horav Shlomo Miller, Horav Dovid Pam and Horav Aharon Miller Shlit’a.