Input Mask

Input Mask format consists of literal display characters (such as parentheses, periods, and hyphens) and masks characters that specify where data is to be entered as well as what kind of data and how many characters are allowed.

Demonstration

Step 1: Create a simple form

Create your own form including a phone field

Step 2: Phone number field

Edit Phone Number Field -> Setting Tab -> Input Mask -> Click Enable -> fill out your format

Mask: Click the field where you want to create the custom input mask.

The result