I have developed suitelet script to select a values from multiselect type field and show results in a sublsit. Currently my script shows all results on same page. How to show pagination dropdown inside the sublist at to right corner. Please advice Thank you!

Below suitelet script shows pagination dropdown on the form above sublist.

function onRequest(context) {
    var form = serverWidget.createForm({
        title: 'Select Numbers'
    });

    var multiselectField = form.addField({
        id: 'custpage_numbers',
        type: serverWidget.FieldType.MULTISELECT,
        label: 'Select Numbers'
    });

    form.addSubmitButton({
        label: 'Submit'
    });

    // Add pagination dropdown
    var rowsField = form.addField({
        id: 'custpage_rows',
        type: serverWidget.FieldType.SELECT,
        label: 'View Row Numbers'
    });

    rowsField.addSelectOption({
        value: '10',
        text: '1 to 10'
    });

    rowsField.addSelectOption({
        value: '20',
        text: '11 to 20'
    });

    rowsField.addSelectOption({
        value: '30',
        text: '21 to 30'
    });
}