A local congregation may disaffiliate from the denomination only
  according to the following procedure:
  a. A church council which adopts a resolution to disaffiliate
  from the denomination shall inform its classis of its actions,
  ordinarily at the next scheduled meeting of classis. The council
  shall provide written grounds for its intention to withdraw.
  b. Classis shall appoint representatives to meet with the council
  to attempt to dissuade the council from such action.
  Representatives of classis shall have the opportunity to meet in
  person with the council and to present written rebuttal to the
  council’s grounds. Meetings between the council and classical
  representatives shall continue no longer than two months unless
  both parties agree to a continuation.
  c. If the council is not dissuaded by the classical
  representatives and wishes to continue the disaffiliation
  process, the council shall issue a call for a congregational
  meeting. It will present together with this call its written
  grounds for disaffiliation and any written rebuttal presented by
  the classical representatives.
  d. Representatives of classis shall be informed of the time and
  location of congregational meetings at which a congregation’s
  withdrawal from the denomination is being considered and shall be
  given opportunity to persuade the congregation to remain within
  the denomination.
  e. At the congregational meeting a preliminary vote may be taken
  following the discussion. If a majority favors withdrawal, a
  second meeting to confirm this decision shall be scheduled no
  earlier than one month and no later than one year following.
  f. If the second congregational vote favors disaffiliation and
  the council follows through on its decision to disaffiliate,
  classis shall provide for the pastoral care of those members who
  wish to remain within the denomination.
  g. If the congregation wishes to disaffiliate from the
  denomination, classis (and synod upon appeal) shall settle any
  disputes between differing factions within the disaffiliating
  congregation. The separation will be complete when classis (or
  synod upon appeal) declares it acquiesces in the decision of the
  congregation to disaffiliate from the denomination.
(Acts of Synod 1997, pp. 613-14)