{{-- Client User --}}
<div class="form-group row">
    <label class="col-md-4" for="customer_id">Client User</label>
    <div class="col-md-8">
        <select class="form-control select2" name="customer_id" id="customer_id" style="width: 100%">
            @if (count($customers) > 0)
                @foreach ($customers as $item)
                    <option value="{{ $item->id }}">
                        {{ $item->firstname . ' ' . $item->lastname }}
                    </option>
                @endforeach
            @endif
        </select>
    </div>
</div>