《元史·本纪·卷九》
设立各路宣慰司，以行省级的官员掌管，并带有宰相衔，那些设立行省机构的路，则不设立宣慰司。
设诸路宣慰司，以行省官为之，并带相衔，其立行省者，不立宣慰司。
Establish Xuanwei Divisions on all routes, with officials at the provincial governor level in charge, and also with the title of Prime Minister. Xuanwei Divisions will not be established on routes where provincial divisions have been established.
<s>[INST] Kindly elucidate the central themes in this passage in English: 设诸路宣慰司，以行省官为之，并带相衔，其立行省者，不立宣慰司。 [/INST] Establish Xuanwei Divisions on all routes, with officials at the provincial governor level in charge, and also with the title of Prime Minister. Xuanwei Divisions will not be established on routes where provincial divisions have been established.</s>
Kindly elucidate the central themes in this passage in English: 设诸路宣慰司，以行省官为之，并带相衔，其立行省者，不立宣慰司。
user
Establish Xuanwei Divisions on all routes, with officials at the provincial governor level in charge, and also with the title of Prime Minister. Xuanwei Divisions will not be established on routes where provincial divisions have been established.
assistant