Q: Ceremonial of Bishops has:

“99  After the deacon has said, Let us offer each other a sign of peace, the bishop who is celebrant gives the kiss of peace at least to the two concelebrants nearest to him, then to the first deacon.

100  Meanwhile the concelebrants and deacons and the other ministers as well as any bishops present also give each other the kiss of peace.”

GIRM 112 has: “At a Mass celebrated by the Bishop or at which he presides without celebrating the Eucharist, the norms found in the Caeremoniale Episcoporum (Ceremonial of Bishops) should be observed.”

What is the “kiss of peace”? Does only the left cheek come close or touch? If two cheeks come close or touch, which is first? 

Who is the “first deacon”/“primo diacono”? Does he have a special location?

Who are the “other ministers” who give each other the kiss of peace? Readers, instituted readers, choir members, commentator, cantor, psalmist, Extraordinary Ministers of Holy Communion?

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A: GIRM 82 leaves the manner of the kiss of peace (sign of peace) to the conferences of bishops in accordance with the culture and customs of the people.

I don’t know of any other reference to the “first deacon.” It probably refers to one of the deacons assisting at the altar, most likely the one who did not instruct people to offer the sign of peace. GIRM 239 informs concelebrants to give the sign to the principal celebrant before the deacon does, presumably meaning the deacon who gave the instruction. This avoids making the command of the deacon appear self-directed.

The GIRM uses “ministers” as a catchall term to cover any of the people assisting at the liturgy.