Sec. 7. Any:
(1) Indiana bank or trust company; or
(2) national bank qualified to act as fiduciary and whose principal place of business is in Indiana;
may establish and maintain one (1) or more common trust funds in accordance with section 2 of this chapter for the funds held by the bank or trust company or any other bank or trust company, including an affiliate, in its capacity as administrator, executor, guardian, or trustee under will or trust agreement.