Is it permitted For a Shali’ach Tzibur to si while conducting services? This includes the Amida, Kdusha and the Torah reading. The reason for him being seated is that he claims he has a medical condition.
I presume that these are all shortcomings in Kavod Hatizbur and Minhag Yisroel. He should not be a Shaliach Tzibur if he cannot stand. If he has a medical condition, then he should not leave the services.