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:
4/ Front-end, users can see new theme has been added:
#New theme has been added.