Prerogative granted to the declarant or the board of directors, under the terms of the declaration of co-ownership, to grant a co-owner a right of exclusive use in certain portions of the common portions of the building (e.g., parking or locker spaces). At the time of the establishment of the divided co-ownership on the building, it is common for the declarant to have allocated to himself the exclusive enjoyment of certain common portions for restricted use. Provided that he remains co-owner, the declarant retains this right of enjoyment as long as he does not attribute such a right to another co-owner. In addition, it is generally required that any assignment, modification and transfer be carried out by means of a notarial act en minute and be notified in writing to the syndicate of co-owners. The assignments are registered in the register of the co-ownership.