Go to your Facebook page and on the search bar enter "Static HTML: iframe tabs" or visit this link https://apps.facebook.com/static_html_plus

Click the "Add Static HTML to a Page" button

Choose your Facebook page to add the iframe tab and click the Add button

Go to your Facebook page and find the Custom Iframe App you just installed - you should find it in your page sidebar

Click on "Set up tab"

 Replace the text in the editor with your iframe code to embed your Vyte Page in there. You can find it right here. (Don't click on "Embed your website" - this will lead you to a Pro feature you'd need to pay for)

Click on "Save & Publish" in the top right corner