Changing a Seat in the Synagogue When Wanting to Establish a Place for Prayer

But one who needs to change his place during the year of mourning for his father, can he remain in his place because whoever establishes a place for his prayer, the God of Abraham assists him?

The new place to which he moves will be considered as his fixed place.

It is stated in the Gemara, Berachot, page 6, side 2: "Rabbi Chelbo said in the name of Rav Huna: Whoever establishes a place for his prayer, the God of Abraham assists him. And when he dies, they say to him: 'Oh humble one, oh pious one, from the disciples of Abraham our father.'" This is also ruled in the Shulchan Aruch, Siman 90, Se'if 19: "One should establish a place for his prayer, not to change it unless necessary. It is not enough to establish a place in the house for prayer, but also in the synagogue where he regularly prays, he should have a fixed place." And it is stated in the Gemara, Bava Batra, page 3, side 2: "Marimar and Mar Zutra demolished and built a winter house, and then demolished it and built a summer house." From this, the Pri Megadim in Orach Chaim, Siman 90, Se'if 33, proved that one can establish a place for the summer and another place for the winter, and it is considered establishing a place for prayer. Therefore, if he establishes his place for a whole year in another place, it is considered establishing a place for prayer for that year. Moreover, in the Responsa of Maharam Shik, Yoreh De'ah, Siman 369, it seems that the issue is specifically in changing the place from the fixed one.