In the rule “The Classroom”, change “If a Student occupies a Desk, that Student may - as a daily action - change their Desk number to that of any unoccupied Desk which is next to their current Desk.” to

If a Student (the “Elephant”) occupies a Desk number X, they may - as a daily action - perform exactly one of the following:
* a step: change their Desk number to that of any unoccupied Desk which is next to their current Desk;
* a pull: choose a Student (the “Rabbit”) occupying a Desk next to the Desk X, perform a step, and then set the Rabbit’s Desk number to X;
* a push: choose a Student (the “Rabbit”) occupying a Desk number Y which is next to the Desk X, change the Rabbit’s Desk number to that of any unoccupied Desk which is next to the Desk Y, and then set the Elephant’s Desk number to Y.
However, a Student may not perform a pull or a push when they are in the PAoI.