I have one issue, to make custom

Label is named:

<p class="form-row form-row-wide validate-required" id="mgrt_table_num_dine_field" data-priority=""><label for="mgrt_table_num_dine" class="">Table Number <abbr class="required" title="required">*</abbr></label><input type="text" class="input-text " name="mgrt_table_num_dine" id="mgrt_table_num_dine" placeholder="Insert your table number." value=""></p>

Thanks.

Read more here: How to make form non required?