clinic/netforce_clinic/layouts/clinic_matching_hdcase.xml

<form model="clinic.matching.hdcase">
    <tabs>
        <tab string="General">
            <field name="date_from" onchange="onchange_date" span="2"/>
            <field name="date_to" span="2"/>
            <field name="file" span="3"/>
            <field name="state" span="3"/>
            <!--<group span="6" columns="1">-->
            <!--<field name="file_lines" nolabel="1">-->
            <!--<list>-->
            <!--<field name="file"/>-->
            <!--</list>-->
            <!--</field>-->
            <!--</group>-->
            <!--<group span="6" columns="1">-->
            <!--</group>-->
        </tab>
        <tab string="Skip Type">
            <group span="6" columns="1">
                <field name="skip_lines" nolabel="1">
                    <list>
                        <field name="type_id"/>
                    </list>
                </field>
            </group>
            <group span="6" columns="1">
            </group>
        </tab>
    </tabs>
</form>