Capital contributions

(1) An interest in a limited liability company may be issued in exchange for a capital contribution, an enforceable promise to make a capital contribution in the future, for a promise to perform services, or any combination thereof. (2) Unless otherwise provided in an operating agreement, the agreement or consent of all the members is necessary to fix or modify the amount and character of the capital contribution that a member shall make or shall promise to make in exchange for an interest in the limited liability company.