followalter

This plugin makes the right sidebar on post.php pages (where you edit a post) stick to the top of the screen when you scroll, so all functions of the sidebar stay within reach. It’s works with the classic version of the editor.
If the total height of the sidebar is larger than the window height, the sidebar sticks to the bottom instead, so the whole sidebar can be made visible through scroll.
On top of this, when you publish or update a page, the plugin will make the page scroll down to the previous scroll position.
This saves users from both having to scroll up (because of the stickyness) and having to scroll down again (using the previous scroll position) every time they update a post!

Admin Sticky Sidebar

This plugin makes the right sidebar on post.php pages (where you edit a post) stick to the top of the screen when you scroll, so all functions of the  …

Digital2

supercica

Click to Call Button plugin you can use to add small floating button for your website visitors to click and call. 
This will make your user experience much better and it will make more people contact your business with ease. 
It allows you to setup position, choose phone icon, choose the color of the text and the icon and much more. 
It is very light and easy to setup and use.
<h4>FEATURES</h4>
<ul>
<li>Enter the phone number for link in a form a text without dashes or space, example: +3819166123456</li>
<li>Enter the visible part of phone number, example 066 123 456 or visible text, ex : Call us now</li>
<li>Choose button color and choose text and icon color </li>
<li>Choose from 7 added icons</li>
<li>Choose button type: square, square rounded and circle</li>
<li>Setup bottom right position of the button</li>
<li>Allows you to choose if you what to hide button from desktop users</li>
</ul>

Click to Call Button

Small floating click to call phone button for your website

Admin Sticky Sidebar vs Click to Call Button