If you want to provide users with individual choices that are either turned on or off, add check boxes to the form. The user can toggle the state of a check box. When the check box is selected, its state is on. When the check box is deselected, its state is off. Check boxes can be turned on and off in any combination and may be used to set the properties of a selection.
After you add a check box to the form design, you can edit the caption text and manipulate the object’s properties in the Field, Value, and Binding tabs of the Object palette. You can define these properties:
Check boxes support scripting and calculations. If a user is to supply data, you can define whether the input is recommended or required, and you can set up messages to prompt users appropriately. All user input may be validated through scripting.
See also 

Overview of check boxes