Click on the field to open the grey field settings box
In the "Validate format" drop-down menu, select the format. This will require people filling out the form to enter data in this format. Formats include...
Number: Only numbers will be allowed (no dashes). By default, there will be no rounding. you can specify the number of decimals it rounds to.
Phone number: In format xxx-xxx-xxxx (parentheses and phone extensions not allowed)
SSN: Social Security number (xxx-xx-xxxx; dashes required)
