JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" ></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-multiselect/0.9.13/js/bootstrap-multiselect.min.js"></script>

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-multiselect/0.9.13/css/bootstrap-multiselect.css" />

<select name="soft_skill_list[]" class="soft_skill_list"  id="soft_skill_list" multiple="multiple">
  <option>Analysing data</option>
  <option>Banquets Operations</option>
  <option>Concierge Operations</option>
  <option>Customer service experience</option>
  <option>Measuring and calculating</option>
  <option>Micros</option>
  <option>Numeracy Skills </option>
  <option>Opening Hotels</option>
  <option>Opera</option>
  <option>Outside catering</option>
  <option>Pre-opening</option>
  <option>Procedures </option>
  <option>Proficiency in computer programming</option>
  <option>Public speaking experience </option>
  <option>Reservation</option>
  <option>Restaurants operations</option>
  <option>Revenue Analysis</option>
  <option>Rooms Division</option>
  <option>Safety and Security</option>
  <option>Sales administration</option>
  <option>Sales Operations</option>
  <option>Social Media</option>
</select>

JavaScript

jQuery('#soft_skill_list').multiselect({
        enableFiltering: true,
        maxHeight:400,
        enableCaseInsensitiveFiltering:true, 
        nonSelectedText: 'Soft Skills ', 
        numberDisplayed: 2, 
        selectAll: false, 
        onChange: function(option, checked) {
                // Get selected options.
                var selectedOptions = jQuery('#soft_skill_list option:selected');
 
                if (selectedOptions.length >= 5) {
                    // Disable all other checkboxes.
                    var nonSelectedOptions = jQuery('#soft_skill_list option').filter(function() {
                        return !jQuery(this).is(':selected');
                    });
 
                    nonSelectedOptions.each(function() {
                        var input = jQuery('input[value="' + jQuery(this).val() + '"]');
                        input.prop('disabled', true);
                        input.parent('li').addClass('disabled');
                    });
                }
                else {
                    // Enable all checkboxes.
                    jQuery('#soft_skill_list option').each(function() {
                        var input = jQuery('input[value="' + jQuery(this).val() + '"]');
                        input.prop('disabled', false);
                        input.parent('li').addClass('disabled');
                    });
                }
            }});