Which chazzan has the shofar blown?
The one who leads Musaf
Restrictiveit is the second who has the shofar blown.
The baal tokeia is someone else
Yerushalmi: blown at Shacharis, enemies took it for a call to arms
Or: the shul is fuller by Musaf
Hallel: the one who leads Shacharis
Permissiveit is the first who calls out
Zerizin makdimin — a mitzvah, as early as one can
Read responsively
Rosh Hashana 4:7
Which Shliach Tzibbur Blows the Shofar
הַשֵּׁנִי מַתְקִיעַ
הָעוֹבֵר לִפְנֵי הַתֵּבָה
בְּיוֹם טוֹב שֶׁל רֹאשׁ הַשָּׁנָה,
הַשֵּׁנִי מַתְקִיעַ.
וּבִשְׁעַת הַהַלֵּל,
רִאשׁוֹן מַקְרֵא אֶת הַהַלֵּל: