Side Tabs is an add-on for Green Popups plugin that allows you to create small tabs (associated with popups) and stick them to any window edge. Clicking the tab opens associated popup. Side Tabs is a perfect way to extend functionality of your website.
This add-on requires Green Popups version 7.0 or higher to be installed.
Installation

    Make sure that you have Green Popups version 7.00 or higher installed.
    Downloads “Side Tabs” from CodeCanyon, install and activate it as a regular plugin. Once activated, it creates Left Side Menu “Green Popups >> Side Tabs”.
    Click “Green Popups >> Side Tabs” and create as many side tabs as you need and associate them with existing popups.
    Go to Settings page to select the tab to be displayed sitewide, or to post/page editor and select the tab for that page.
    Read documentation regarding using Side Tabs on your site.