N/ui/serverWidget Module
Assistant.addFieldGroup()
Method Description: Adds a field group to the assistant. A field group is a collection of fields that can be displayed in a one or two column format. Assign a field to a field group in order to label, hide or collapse a group of fields. By default, the field group is collapsible and appears expanded on the assistant page. To change this behavior, set the FieldGroup.isCollapsed and FieldGroup.isCollapsible properties.
Returns: serverWidget.FieldGroup object
Supported Script Types: SuiteScript 2.0 Suitelet Script Type and SuiteScript 2.0 User Event Script Type (beforeLoad(scriptContext))
Governance: None
Module: N/ui/serverWidget Module
Since: 2015.2
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=Assistant.addFieldGroup(options)

// Code Example 1

//Add additional code

//...

var assistant = serverWidget.createAssistant({

    title : 'Simple Assistant'

});

assistant.addFieldGroup({

    id : 'idname',

    label : 'Sample label'

});

//...

//Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_4332762451.html