Can. 1242 Bodies are not to be buried in churches unless it is a question of burying in their own church the Roman Pontiff, cardinals, or diocesan bishops, including retired ones.
GIRM, 304. Out of reverence for the celebration of the memorial of the Lord and for the banquet in which the Body and Blood of the Lord are offered on an altar where this memorial is celebrated, there should be at least one white cloth.
Not really sure the purpose of quoting canon 1242, since these are diocesan bishops, nor the purpose of quoting the GIRM, since that altar isn't being used for Mass.Quicumque.