(1) A building manager may be appointed for a strata scheme.
(2) The appointment is to be made by instrument in writing (a building manager agreement) executed before or after the strata scheme commenced by the building manager and—
(a) by the original owner, if executed before the strata scheme commenced, or
(b) under the authority of a resolution passed at a general meeting of the owners corporation of the strata scheme, if executed after the strata scheme commenced.