Are proxy votes acceptable for closed session decisions? - K.K.B., Oct. 14, 1998
A:
Unless the bylaws state otherwise, there is not only no time limit, but no requirement to send the agenda at all.
If proxy voting is allowed at all, it is allowed during executive (closed) session meetings.
Proxy voting is not allowed unless your state government requires it be allowed, or unless your organization's bylaws allow it.