5.F.4 Collective Mass Offerings
1. Separate masses are to be applied for the intention(s) for which an individual offering, even if small, has been made and accepted.  It is not licit to indiscriminately gather Mass offerings for particular intentions and to satisfy them with a single Mass, sometimes called a “collective intention.” 
2. Only by way of exception, “In cases in which the people making the offering, have been previously explicitly informed and have freely consented to combining their offerings in a single offering, their intentions can be satisfied with a single Mass celebrated according to a ‘collective’ intention. In this case it is necessary that the place and time for the celebration of this Mass, which is not to be said more than twice a week, be made public.” 
3. In these cases, “it is licit for the celebrant to keep the amount of the offering [for one Mass] established by the diocese. Any amount exceeding this offering shall be consigned to the ordinary as specified in canon 951, par. 1, who will provide for its destination according to the ends established by law.” 
4. In the Diocese of Lansing, there shall be no more scheduling of double or more intentions at the same Mass. Where this practice is currently in place, it is allowed to continue but those offering stipends for such a Mass need to be clearly informed about this plurality of intentions, and it can only happen twice a week. 
5. A Mass pro populo is to be offered every Sunday and holy day of obligation, and on these occasions, there is to be no other intention.
 c. 948.
 Congregation for the Clergy, decree, Norms concerning the practice of Mass stipends, Mos iugiter (approved in forma specifica by Pope John Paul II, February 22, 1991) AAS 83  pp. 443-446.
 Ibid., article 2, paragraphs 1-2.
 Ibid., article 3, paragraphs 1-2.
 October 14, 2011.