Making Your Skin as Wiki's Default Skin

To make your new skin the default skin for all visitors to your wiki, set the $wgDefaultSkin variable in LocalSettings.php file to the name of your skin. For example, replace $wgDefaultSkin = 'monobook' with $wgDefaultSkin = 'jazzmeet'. Save the file and upload it in its original directory.

Making Your Skin as Your Default Skin

Log in to your wiki, and select the my preferences option from the user bar (positioned at the top-right of the screen in MonoBook). Select the Skins tab and you will find your new skin is in the list of skins that are available on your wiki.

Select the option button that is next to your skin's name, and click the Save button at the bottom of the page in order to set the skin as the default each time you log in.