Laravel How to not require a required input - php

Question

Hi I have a laravel Webapp (foxtrot invoice management system) in my website, there is required fields in a form that is used to store customer data to create invoice later. I don't want to have all the fields being required. Like, let's say, I want all the field to be optional. How can I do it?
<div class="card card-form">
<div class="row no-gutters">
<div class="col-lg-4 card-body">
<p><strong class="headings-color">{{ __('messages.customer_information') }}</strong></p>
<p class="text-muted">{{ __('messages.basic_customer_information') }}</p>
</div>
<div class="col-lg-8 card-form__body card-body">
<div class="row">
<div class="col">
<div class="form-group required">
<label for="display_name">{{ __('messages.display_name') }}</label>
<input name="display_name" type="text" class="form-control" placeholder="{{ __('messages.display_name') }}" value="{{ $customer->display_name }}" required>
</div>
</div>
<div class="col">
<div class="form-group required">
<label for="contact_name">{{ __('messages.contact_name') }}</label>
<input name="contact_name" type="text" class="form-control" placeholder="{{ __('messages.contact_name') }}" value="{{ $customer->contact_name }}" required>
</div>
</div>
</div>
<div class="row">
<div class="col">
<div class="form-group required">
<label for="email">{{ __('messages.email') }}</label>
<input name="email" type="email" class="form-control" placeholder="{{ __('messages.email') }}" value="{{ $customer->email }}" required>
</div>
</div>
<div class="col">
<div class="form-group">
<label for="phone">{{ __('messages.phone') }}</label>
<input name="phone" type="text" class="form-control" placeholder="{{ __('messages.phone') }}" value="{{ $customer->phone }}">
</div>
</div>
</div>
<div class="row">
<div class="col">
<div class="form-group required">
<label for="currency_id">{{ __('messages.currency') }}</label>
<select name="currency_id" data-toggle="select" class="form-control select2-hidden-accessible" data-select2-id="currency_id" required>
<option disabled selected>{{ __('messages.select_currency') }}</option>
#foreach(get_currencies_select2_array() as $option)
<option value="{{ $option['id'] }}" {{ $customer->currency_id == $option['id'] ? 'selected=""' : '' }}>{{ $option['text'] }}</option>
#endforeach
</select>
</div>
</div>
<div class="col">
<div class="form-group">
<label for="website">{{ __('messages.website') }}</label>
<input name="website" type="text" class="form-control" placeholder="{{ __('messages.website') }}" value="{{ $customer->website }}">
</div>
</div>
</div>
<div class="row">
<div class="col">
<div class="form-group">
<label for="vat_number">{{ __('messages.vat_number') }}</label>
<input name="vat_number" type="text" class="form-control" placeholder="{{ __('messages.vat_number') }}" value="{{ $customer->vat_number }}">
</div>
</div>
</div>
<div class="row">
<div class="col">
<div class="form-group">
<label for="kvk_number">{{ __('messages.kvk_number') }}</label>
<input name="kvk_number" type="text" class="form-control" placeholder="{{ __('messages.kvk_number') }}" value="{{ $customer->kvk_number }}">
</div>
</div>
</div>
</div>
</div>
<div class="row no-gutters">
<div class="col-lg-4 card-body">
<p><strong class="headings-color">{{ __('messages.billing_address') }}</strong></p>
<p class="text-muted">{{ __('messages.customer_billing_address') }}</p>
</div>
<div class="col-lg-8 card-form__body card-body">
<p class="row"><strong class=" col headings-color">{{ __('messages.billing_address') }}</strong></p>
<div class="row">
<div class="col">
<div class="form-group required">
<label for="billing[name]">{{ __('messages.name') }}</label>
<input name="billing[name]" type="text" class="form-control" placeholder="{{ __('messages.address_name') }}" value="{{ $customer->billing->name }}" required>
</div>
</div>
<div class="col">
<div class="form-group">
<label for="billing[phone]">{{ __('messages.phone') }}</label>
<input name="billing[phone]" type="text" class="form-control" value="{{ $customer->billing->phone }}" placeholder="{{ __('messages.phone') }}">
</div>
</div>
</div>
<div class="row">
<div class="col">
<div class="form-group required">
<label for="billing[country_id]">{{ __('messages.country') }}</label>
<select id="billing[country_id]" name="billing[country_id]" data-toggle="select" class="form-control select2-hidden-accessible" data-select2-id="billing[country_id]" required>
<option disabled selected>{{ __('messages.select_country') }}</option>
#foreach(get_countries_select2_array() as $option)
<option value="{{ $option['id'] }}" {{ $customer->billing->country_id == $option['id'] ? 'selected=""' : '' }}>{{ $option['text'] }}</option>
#endforeach
</select>
</div>
</div>
<div class="col">
<div class="form-group">
<label for="billing[state]">{{ __('messages.state') }}</label>
<input name="billing[state]" type="text" class="form-control" value="{{ $customer->billing->state }}" placeholder="{{ __('messages.state') }}">
</div>
</div>
</div>
<div class="row">
<div class="col">
<div class="form-group">
<label for="billing[city]">{{ __('messages.city') }}</label>
<input name="billing[city]" type="text" class="form-control" value="{{ $customer->billing->city }}" placeholder="{{ __('messages.city') }}">
</div>
</div>
<div class="col">
<div class="form-group">
<label for="billing[zip]">{{ __('messages.postal_code') }}</label>
<input name="billing[zip]" type="text" class="form-control" value="{{ $customer->billing->zip }}" placeholder="{{ __('messages.postal_code') }}">
</div>
</div>
</div>
<div class="form-group required">
<label for="billing[address_1]">{{ __('messages.address') }}</label>
<textarea name="billing[address_1]" class="form-control" rows="2" placeholder="{{ __('messages.address') }}" required>{{ $customer->billing->address_1 }}</textarea>
</div>
</div>
</div>
{{-- <div class="row no-gutters">
<div class="col-lg-4 card-body">
<p><strong class="headings-color">{{ __('messages.shipping_address') }}</strong></p>
<p class="text-muted">{{ __('messages.customer_shipping_address') }}</p>
</div>
<div class="col-lg-8 card-form__body card-body">
<p class="row"><strong class=" col headings-color">{{ __('messages.shipping_address') }}</strong></p>
<div class="row">
<div class="col">
<div class="form-group">
<label for="shipping[name]">{{ __('messages.name') }}</label>
<input name="shipping[name]" type="text" class="form-control" value="{{ $customer->shipping->name }}" placeholder="{{ __('messages.address_name') }}">
</div>
</div>
<div class="col">
<div class="form-group">
<label for="shipping[phone]">{{ __('messages.phone') }}</label>
<input name="shipping[phone]" type="text" class="form-control" value="{{ $customer->shipping->phone }}" placeholder="{{ __('messages.phone') }}">
</div>
</div>
</div>
<div class="row">
<div class="col">
<div class="form-group">
<label for="shipping[country_id]">{{ __('messages.country') }}</label>
<select id="shipping[country_id]" name="shipping[country_id]" data-toggle="select" class="form-control select2-hidden-accessible" data-select2-id="shipping[country_id]">
<option disabled selected>{{ __('messages.select_country') }}</option>
#foreach(get_countries_select2_array() as $option)
<option value="{{ $option['id'] }}" {{ $customer->shipping->country_id == $option['id'] ? 'selected=""' : '' }}>{{ $option['text'] }}</option>
#endforeach
</select>
</div>
</div>
<div class="col">
<div class="form-group">
<label for="shipping[state]">{{ __('messages.state') }}</label>
<input name="shipping[state]" type="text" class="form-control" value="{{ $customer->shipping->state }}" placeholder="{{ __('messages.state') }}">
</div>
</div>
</div>
<div class="row">
<div class="col">
<div class="form-group">
<label for="shipping[city]">{{ __('messages.city') }}</label>
<input name="shipping[city]" type="text" class="form-control" value="{{ $customer->shipping->city }}" placeholder="{{ __('messages.city') }}">
</div>
</div>
<div class="col">
<div class="form-group">
<label for="shipping[zip]">{{ __('messages.postal_code') }}</label>
<input name="shipping[zip]" type="text" class="form-control" value="{{ $customer->shipping->zip }}" placeholder="{{ __('messages.postal_code') }}">
</div>
</div>
</div>
<div class="form-group">
<label for="shipping[address_1]">{{ __('messages.address') }}</label>
<textarea name="shipping[address_1]" class="form-control" rows="2" placeholder="{{ __('messages.address') }}">{{ $customer->shipping->address_1 }}</textarea>
</div>
</div>
</div> --}}
#if($customer->getCustomFields()->count() > 0)
<div class="row no-gutters">
<div class="col-lg-4 card-body">
<p><strong class="headings-color">{{ __('messages.custom_fields') }}</strong></p>
</div>
<div class="col-lg-8 card-form__body card-body">
<div class="row">
#foreach ($customer->getCustomFields() as $custom_field)
#include('layouts._custom_field', ['model' => $customer, 'custom_field' => $custom_field])
#endforeach
</div>
</div>
</div>
#endif
{{ __('messages.save_customer') }}