Define fields to structure the data that a form displays. You can add fields to data objects and specify the field type, such as Picklist, Boolean, or Text (single line). For example, to include a field that displays a list of available courses in an Onboarding application, you might add a Courses field to a data object, and then select Picklist as the field type.
In the navigation pane of App Studio, click Data.
Click Data objects and integrations.
Click the name of a data object.
Add fields by repeating the following steps for each field.
On the Data model tab, click + Add field.
Enter the name of the field.
In the Type column, select the type of data that you want to store.