Commentary for Shabbat 266:10

ר' יוסי אומר אפילו אלו נוטלין ואלו מניחין אף זה היה תמיד

and four preceded them, two in order to remove the two courses,<span class="x" onmousemove="('comment',' Of the previous week's loaves. ');">¹⁸</span> and two to remove the two censers. Those who brought in [the new loaves and frankincense] stood in the north facing the south,<span class="x" onmousemove="('comment',' Because the Table was placed east to west, and the priests stood at its side facing its breadths. ');">¹⁹</span>

Rashi on Shabbat