Let’s delve deeper into liturgical “modifications,” past the bishops, and especially the role of the clergy, laity, and even of non-Christians:
65. The episcopal conference will examine what has to be modified in liturgical celebrations because of the traditions and mentality of peoples. It will ask the national or regional liturgical commission to study the matter and examine the different aspects of the elements of local culture and their eventual inclusion in the liturgical celebrations. The commission is to ensure that it receives the appropriate expert advice. It may be sometimes opportune to ask the advice of members of non-Christian religions about the religious or civil value of this or that element (cf. above Nos. 30-32).
If the situation requires it, this preliminary examination will be made in collaboration with the episcopal conferences of neighboring countries or those with the same culture (cf. above Nos. 33-51).
This presumes a basic level of competence in those commissions, laity and even the clergy. But it is good for bishops to have sound input from people who are actually celebrating the rites outside of the cathedral, the see city, and the special celebrations provided for the bishop.