Tawk

Replace HERE with link from tawk, it should look something like what is showcase in the example below.
Example:
https://embed.tawk.to/62fe0deb54f06e12d88f56cf/1gao6co65';

var Tawk_API=Tawk_API||{}, Tawk_LoadStart=new Date();
(function(){ var s1=document.createElement("script"),s0=document.getElementsByTagName("script")[0];
s1.async=true; s1.src='HERE';
s1.charset='UTF-8'; s1.setAttribute('crossorigin','*');
s0.parentNode.insertBefore(s1,s0);
})();

Udesk

Replace HERE and HERE with code and link from Udesk, it should look something like what is showcase in the example below. Example: Random code should look something like 1gndfj6a
https://1344913.s4.udesk.cn/im_client/?web_plugin_id=43169

(function(a,h,c,b,f,g){a["UdeskApiObject"]=f;a[f]=a[f]||function()
{(a[f].d=a[f].d||[]).push(arguments)}
;g=h.createElement(c);g.async=1;g.charset="utf-8";g.src=b;c=h.getElementsByTagName(c)[0];c.parentNode.insertBefore(g,c)})(window,document,"script","https://assets-cli.s4.udesk.cn/im_client/js/udeskApi.js","ud"); ud({ "code": "HERE", "link": "HERE" });

Zendesk

Replace HERE with key from Zendesk widget code, it should look something like what is showcased in the example below. Example:
a9ad0583-10d6-4f66-8694-cac8afn2a39e

function loadScript(src, callback) { var script = document.createElement('script'), head = document.getElementsByTagName('head')[0]; script.type = 'text/javascript'; script.charset = 'UTF-8'; script.src = src; script.async = 'async'; script.id = 'ze-snippet';if (script.addEventListener){ script.addEventListener('load', function (){ callback(); }, false); } else if (script.attachEvent) { script.attachEvent('onreadystatechange', function (){ var target = window.event.srcElement; if (target.readyState == 'loaded'){ callback(); }}); } head.appendChild(script);}loadScript('https://static.zdassets.com/ekr/snippet.js?key=HERE',function(){});

Zoho Live Chat

Replace HERE with widget code from Zoho, it should look something like what is showcase in the example below. Example: ccdd92e9619653f08eDe0fe2e0de27f91c0irbaebf965f186e057739585045

var $zoho={}; $zoho.salesiq = {widgetcode: "HERE", values:{},ready:function(){}}; var d=document;s=d.createElement("script");s.type="text/javascript";s.id="zsiqscript";s.defer=true;s.src="https://salesiq.zoho.com/widget";t=d.getElementsByTagName("script")[0];t.parentNode.insertBefore(s,t);