Appointment of company to be trustee
12.  In all cases in which the court or any person or persons has or have power to appoint a trustee, whether as an original or new or additional trustee, to perform any legal trust or duty, a trust company may be appointed in the same manner as if the company were a private individual:
Provided that no trust company shall be appointed in any case in which the instrument creating the trust, or the power authorising the appointment, forbids the appointment of a company.