If common property has been altered, then approval can be obtained retrospectively.
I don't think that this the CTTT takes this bylaw as implied. We had an owner who put a 25 foot fence and cut a railing in his balcony to make a private area for himself. Two ADDITIONS made without even a executive meeting or general meeting. When a complaint was made his friends got together and started passing special resolutions. Matter went to adjudicator and hearing but these 2 structures remain and today he has defacto exclusive access to that bit of common property. What a Joke!