galaxy/scripts/api/sample_configurations/sample_tracking/sample_form.xml

<form type="sample" name="Sample Sample Form" description="Sample Sample Form description">
    <layout>
        <grid name="Run details" />
    </layout>
    <fields>
        <field name="field1" type="text" label="Sample form field1" description="Description of sample form field1" value="" required="True" layout="Run details"/>
        <field name="field2" type="text" area="True" label="Sample form field2" description="Description of sample form field2" value="" layout="Run details"/>
        <field name="field3" type="select" label="Sample form field3" description="Description of sample form field3" value="" layout="Run details">
            <option value="option1" />
            <option value="option2" />
        </field>
        <field name="field4" type="select" label="Sample form field4" description="Description of sample form field4" value="" checkboxes="True" layout="Run details">
            <option value="option1" />
            <option value="option2" />
        </field>
        <field name="field5" type="address" label="Sample form field5" description="Description of sample form field5" layout="Run details"/>
    </fields>
</form>