Mybb how to install plugins?

how to install and configure the DVZ shoutbox in mybb?

Dvz shoutbox: https://community.mybb.com/mods.php?action=view&pid=63

Upload the files from UPLOAD to your MyBB root directory.
Copy the CSS included in the package (STYLES.txt) into your theme stylesheets (for example global.css).
Insert the {$dvz_shoutbox} variable into your index template.
Install the plugin in the ACP

Wow, this man had it on lock ^. Do us a favor and read the file named "README.txt"