Originally Posted by
Gilroy
Trespass to Property Act
1. (1) In this Act,
“occupier” includes,
(a) a person who is in physical possession of premises, or
(b) a person who has responsibility for and control over the condition of premises or the activities there carried on, or control over persons allowed to enter the premises,
even if there is more than one occupier of the same premises; (“occupant”)
“premises” means lands and structures, or either of them,
2. (1) Every person who is not acting under a right or authority conferred by law and who,
(a) without the express permission of the occupier, the proof of which rests on the defendant,
(i) enters on premises when entry is prohibited under this Act, or
(ii) engages in an activity on premises when the activity is prohibited under this Act; or
(b) does not leave the premises immediately after he or she is directed to do so by the occupier of the premises or a person authorized by the occupier,
is guilty of an offence and on conviction is liable to a fine of not more than $10,000. R.S.O. 1990, c. T.21, s. 2 (1); 2016, c. 8, Sched. 6, s. 1.
As you can read even a "person authorized by the occupant" can direct a person to leave the premises.Otherwise the authorization slips would be useless.Hence a person authorized by the occupant becomes their agent.