Below the field list on Form customization there is a button called Add custom field. It opens a picker grouped into six sections, in this order: Contact, Conversion, Checkout & payment, Delivery, Payment and Content. Once added, a custom field behaves like any other row: you can rename it, reorder it and remove it.
The available types are Buy now (pay with card), WhatsApp button, Choice list, Dropdown, Date of birth, Delivery instructions (textfield), Cash / change checkbox, Countdown timer, Image and Trusted badges. Only one Buy now (pay with card) button is allowed per form. Trusted badges carries a Standard badge in the picker: on Free and Basic you can show one badge, chosen from a list of three.
Choice list and Dropdown give the customer a set of options you write yourself, with Allow multiple selections on the choice list. Delivery instructions (textfield) collects free text such as gate codes. Cash / change checkbox lets the customer say they will have the exact amount. Date of birth has its own date order, month display and a Require minimum age option, which is what you want for age restricted products. Answers from these fields are saved on the Shopify order as additional details, under the name you gave the field.
WhatsApp button takes your phone number with country code and an optional pre-filled message, so a hesitant customer can ask before ordering. Image takes an image or GIF URL and a size. Buy now (pay with card) adds a card payment path next to the cash on delivery one. It is the button partial payment uses when partial payment is set to optional; in the default required mode the main purchase button opens the deposit window instead.
Press Save, then place a test order that fills in your new field, and open the order in Shopify admin to confirm the answer arrived where you expect it.
Trust badges and the countdown timer have their own settings and are worth a separate look.
Translate custom field labels on the Translations tab, under Custom fields.
Keep the form short: every extra question costs you completed orders.
Stuck on any of this? Open the chat in the bottom right corner of the app and we will help you set it up.
