Building the Model

Step 3 Adding an Auxiliary Variable

Next, we will need an auxiliary variable to help calculate the rate at which susceptible people become infected people. call this variable Infection Fraction. Keep in mind that this is a coefficient and not a rate.

Procedure:

• Click on the Auxiliary Variable button on the toolbar.
• Now click in the workspace where you want to add the variable.
• Type in the name and press enter.

Adding an Auxiliary Variable