; (3) except as provided in subsection (d), terminate on the date that the tribal governing body first convenes; and (4) with respect to any contractual right established and any obligation entered into by the Interim Council, have the authority and capacity to bind the tribal governing body, as the successor in interest to the Interim Council, for a period of not more than 6 months beginning on the date such tribal governing body first convenes. (d) Vacancy on interim council Not later than 30 days after a vacancy occurs on the Interim Council and subject to the approval of the Secretary, the Interim Council shall hold a general council meeting to nominate a candidate for election to fill such vacancy and hold such election. The Interim Council shall provide notice of the time, place, and purpose of such meeting and election to members described in section 7(d) not less than 10 days before each general meeting or election. 6. Tribal constitution and bylaws; tribal governing body (a) Adoption of proposed constitution and bylaws; election (1) Time and procedure The Interim Council shall— (A) prepare the tribal constitution and bylaws which shall provide for, at a minimum, the establishment of a tribal governing body and tribal membership qualifications