You can use a calculation control for performing mathematical operations on a set of fields and storing the result in another field. For example, on a form, you can add two numeric type field values and display the result in another numeric type field.
Properties
Once a Calculation control has been added to a form, you can configure it using the options on the Properties tab.
ID: The calculation control ID. The ID is automatically assigned when a calculation control is added to a form. The value of this field cannot be edited.
Name: A name for the calculation control. This name is used to identify the calculation control in other forms. You cannot edit the name of a calculation control if it is mapped to an index field.
Field Mapping: Select an index field from this list in order to map the calculation control to the field.
Configure: Opens the Edit Calculation window were you can specify an equation.
Edit Rules: Opens the Edit Rules window where you can configure conditional rules for the control. See Conditional rules for more information.