When any body of persons associated for the purpose of maintaining religious worship has acquired, or hereafter shall acquire, any property,
     and such property has been or hereafter shall be vested in trustees in trust for such body,
     and it becomes necessary to appoint a new trustee in the place of or in addition to any such trustee or any trustee appointed in the manner hereinafter prescribed,
     and no manner of appointing such new trustee is prescribed by any instrument by which such property was so vested or by which the trusts on which it is held have been declared, or such new trustee cannot for any reason be appointed in the manner so prescribed,
     such new trustee may be appointed in such manner as may be agreed upon by such body, or by a majority of not less than two-thirds of the members of such body actually present at the meeting at which the appointment is made.