1/ When you already had the plugin package, extract file template (in zip) to a folder and upload “app” folder and their contents to your site (allow overwrite old files)

Example, we added 'mooBuk' as new theme

2/ Go to Admin Dashboard/Site Manager/Theme Manager/Not Installed Theme, find the 'mooBuk' theme and press Install button:

3/ After installation, there will be a Message:

#Installation successful.

Now at front-end, users can see new theme has been added:

#New theme has been added.