You are not allowed to make alterations to any walls without permission from Property . You may request in writing by emailing Property  your request including which rooms and how many hooks you are planning to put up.  This is at the discretion of the manager to be approved or not.
PLEASE NOTE: Although temporary (adhesive) picture hooks are marketed as easy to remove, they can and often damage paint work when removed.  If damage to the walls occurs, it will be at your cost to have them repaired to the satisfaction of Property , taking into account the condition when your lease started.