Unless a contrary intent is manifested in the instrument creating the power, the donee may appoint all of the property to one or more of the objects to the exclusion of the others. A direction to appoint “to”, “among” or “between” two or more objects shall not be a sufficient manifestation of a contrary intent. However, when the donee is prevented from excluding any object by the instrument creating the power, each object shall receive an equal share, unless the instrument creating the power manifests an intent that some other division may be made.