Michigan Compiled Laws, Chapter 211. Taxation of Real and Personal Property § 211.32

Sec. 32. If from any cause a quorum shall not be present at any meeting of the board of review, it shall be the duty of the supervisor, or, in his absence, any other member of the board present, to notify each absent member to attend at once, and it shall be the duty of the member so notified to attend without delay. If from any cause the second meeting of such board of review herein provided for is not held at the time fixed therefor, then and in that case it shall meet on the next Monday thereafter, and proceed in the same manner and with like powers as if such meeting had been held as hereinbefore provided.