Validation is available for textboxes and checkboxes. Textbox validation types include phone, email, zip, social security number, employer identification number, letters only, numbers only, letters and numbers only (no special characters), and decimals). Checkbox validation types include Select at least, Select at most, and Select exactly.

To add field validation:

1. Go to the field attributes menu.
2. Hover over or click the currently applied validation type (which may be “No validation”).
3. Select the type of validation you want applied.