How to save data in two tables with dynamic form widget in Yii2?

I have two tables tbl_officials_info and tbl_officials_political_info and I created models for them. I want to save data in that two tables with dynamic form widget in Yii2. This is my button

    <?php DynamicFormWidget::end(); ?>
  <?= Html::submitButton($officialsinfo->isNewRecord && $tbl_official_politicalInfo->isNewRecord ? 'Create' : 'Update', ['class' => 'btn btn-primary']) ?>
    <?php ActiveForm::end(); ?>

I tried googling some ideas but I don’t get any results. Please help me. This is my _form.php view I have nested loop for 2 dynamicform array model the $model and $tbl_officials_political_info

<div class="customer-form">

<?php $form = ActiveForm::begin(['id' => 'dynamic-form']); ?>

<div class="padding-v-md">
    <div class="line line-dashed"></div>
</div>
<?php DynamicFormWidget::begin([
    'widgetContainer' => 'dynamicform_wrapper', // required: only alphanumeric characters plus "_" [A-Za-z0-9_]
    'widgetBody' => '.container-items', // required: css class selector
    'widgetItem' => '.item', // required: css class
    'limit' => 5, // the maximum times, an element can be cloned (default 999)
    'min' => 1, // 0 or 1 (default 1)
    'insertButton' => '.add-item', // css class
    'deleteButton' => '.remove-item', // css class
    'model' => $model[0],
    'model' => $tbl_official_politicalInfo[0],
    'formId' => 'dynamic-form',
    'formFields' => [
        'firstname',
        'middlename',
        'lastname',
        'suffix_id',
        'birthday',
        'gender_id',
        'gov_position_id'
    ],
]); ?>
<div class="panel panel-default">
    <div class="panel-heading">
        <i class="fa fa-user"></i> Add Official
        <button type="button" class="pull-right add-item btn btn-success btn-xs"><i class="fa fa-plus"></i> Add Official</button>
        <div class="clearfix"></div>
    </div>
    <div class="panel-body container-items"><!-- widgetContainer -->
        <?php foreach ($model as $index => $officialsinfo): ?>
            <?php foreach ($tbl_official_politicalInfo as $key => $tbl_official_politicalInfo): ?>
                <div class="item panel panel-default"><!-- widgetBody -->
                    <div class="panel-heading">
                        <span class="panel-title-address">Official: <?= ($index + 1) ?></span>
                        <button type="button" class="pull-right remove-item btn btn-danger btn-xs"><i class="fa fa-minus"></i></button>
                        <div class="clearfix"></div>
                    </div>
                    <div class="panel-body">
                        <?php
                            // necessary for update action.
                        /* if (!$model->isNewRecord) {
                                echo Html::activeHiddenInput($model, "[{$index}]id");
                            }else if(!$tbl_official_politicalInfo->isNewRecord){
                                echo Html::activeHiddenInput($tbl_official_politicalInfo, "[{$index}]id");
                            }*/
                        ?>
                        <?= $form->field($officialsinfo, "[{$index}]firstname")->textInput() ?>
                        <?= $form->field($officialsinfo, "[{$index}]middlename")->textInput() ?>
                        <?= $form->field($officialsinfo, "[{$index}]lastname")->textInput() ?>
                        <?= 
                            $form->field($officialsinfo, "[{$index}]suffix_id")->widget(Select2::classname(), [
                                'hideSearch' => true,
                                'data' => $suffix,
                                'options' => ['placeholder' => 'Select Suffix', 'required'],
                                'pluginOptions' => [
                                    'allowClear' => true
                                ],
                            ]); 
                            ?>
                        <?= 
                            $form->field($officialsinfo, "[{$index}]birthday")->widget(DatePicker::classname(), [
                                'options' => ['placeholder' => 'Enter birth date ...'],
                                'pluginOptions' => [
                                    'autoclose' => true,
                                    'format' => 'yyyy-mm-dd'
                                ]
                            ]);
                        ?>
                        <?= 
                            $form->field($officialsinfo, "[{$index}]gender_id")->widget(Select2::classname(), [
                                'hideSearch' => true,
                                'data' => $gender,
                                'options' => ['placeholder' => 'Select Sex'],
                                'pluginOptions' => [
                                    'allowClear' => true
                                ],
                            ]);
                        ?>
                        <?= 
                            $form->field($officialsinfo, "[{$index}]gov_position_id")->widget(Select2::classname(), [
                                'hideSearch' => true,
                                'data' => $govpos,
                                'options' => ['class' => 'gov_position_id', 'placeholder' => 'Select Position'],
                                'pluginOptions' => [
                                    'allowClear' => true
                                ],
                            ]); 
                        ?>
                         <?php
                            $provinceList = \yii\helpers\Url::to(['tblofficialsinfo/province-list']);
                            echo $form->field($tbl_official_politicalInfo, 'region_id')->widget(
                                Select2::classname(),
                                [
                                    'data' => $regions,
                                    'options' => ['placeholder' => 'Select the region', 'required'],
                                    'pluginOptions' => [
                                        'allowClear' => true
                                    ],
                                    'pluginEvents' => [
                                        'select2:select' => '
                                            function(){
                                                var vals = this.value;//value ng region_id
                                                $.ajax({
                                                    url: "' . $provinceList . '",
                                                    data: {regCode:vals}

                                                }).done(function(result) {
                                                    $(".provinceClass").html("").select2({ data:result, theme:"krajee", width:"100%", allowClear: true,});
                                                    $(".provinceClass").select2("val","");
                                                });
                                            }'
                                    ]
                                ]
                            );
                        ?>
                        <?php
                            $citymun = \yii\helpers\Url::to(['tblofficialsinfo/citymun-list']);
                            echo $form->field($tbl_official_politicalInfo, "[{$key}]province_id")->widget(Select2::classname(), [
                                'data' => $provinceAll,
                                'options' => ['placeholder' => 'Select ...', 'class' => 'provinceClass', 'required'],
                                'pluginOptions' => ['allowClear' => true],
                                'pluginEvents' => [
                                    'select2:select' => '
                                        function(){
                                            var vals = this.value;
                                            $.ajax({
                                                url: "' . $citymun . '",
                                                data: {provCode:vals}

                                            }).done(function(result) {
                                                //$("#citymunCode").prop("disabled", false); //
                                                $(".citymunClass").html("").select2({ data:result, theme:"krajee", width:"100%", allowClear: true,});
                                                $(".citymunClass").select2("val",""); 
                                            });
                                        }'
                                ]
                            ]);
                        ?>
                        <div id="citymunField">
                            <?=
                                $form->field($tbl_official_politicalInfo, "[{$key}]citymun_id")->widget(Select2::classname(), [
                                    'data' => $citymunall,
                                    'options' => ['placeholder' => 'Select ...', 'class' => 'citymunClass', 'required'],
                                    'pluginOptions' => ['allowClear' => true]

                                ]);
                            ?>
                        </div>
                        <?=
                            $form->field($tbl_official_politicalInfo, "[{$key}]political_party_id")->widget(Select2::classname(), [
                                'data' => $political_parties,
                                'options' => ['placeholder' => 'Select Political Party'],
                                'pluginOptions' => [
                                    'allowClear' => true
                                ],
                            ]);
                            ?>
                            <?= $form->field($tbl_official_politicalInfo, "[{$key}]proclamation_date")->widget(DatePicker::class, [
                            'options' => ['placeholder' => 'Enter Proclamation Date ...'],
                            'type' => DatePicker::TYPE_COMPONENT_APPEND,
                            'pluginOptions' => [
                                'autoclose' => true,
                                'format' => 'yyyy-mm-dd'
                            ]
                            ]) 
                        ?>    
                    </div>
                </div>
            <?php endforeach; ?>
        <?php endforeach; ?>
    </div>
</div>
   <?php DynamicFormWidget::end(); ?>
    <div class="form-group">
        <?= Html::submitButton($officialsinfo->isNewRecord && $tbl_official_politicalInfo->isNewRecord ? 'Create' : 'Update', ['class' => 'btn btn-primary']) ?>
    </div>
    <?php ActiveForm::end(); ?>
</div>