Configuring the association of APB areas with terms of internal variables is not mandatory.

Configure the association of APB areas with terms of internal variables is carried out as follows:

1. Go to the Apollo APB Area object settings panel.
   
2. In the Internal variable drop-down list select the Apollo Internal Variable object corresponding to the required internal variable (1).
3. In the IV term drop-down list select the required Apollo Term object (2).
4. In the IV value if there are minimum persons in zone drop-down list select an operation to be performed on term when the condition is fulfilled (3, see the table).

5. In the IV value if there are maximum persons in zone drop-down list select an operation to be performed on term when the condition is fulfilled (4, see the table).

   Operation	Description
   No operation	The value of the corresponding term does not change
   Clear term	The term is set to FALSE
   Set term	The term is set to TRUE
   Send impulse	The value of the term changes to the opposite for a short preset period

6. Set the required value in the Minimum number of persons for IV triggering field (5).
7. Set the required value in the Maximum number of persons for IV triggering field (6).
8. Click Apply (7).
9. To save the changes to the controller, write configuration to hardware.