Installing the Lavida template, T4 framework, and other extensions on your existing Joomla website.
From your back-end setting panel, go to: "System > Extensions > Upload Package File tab", browse the installation files to install them.
By default, the T4 plugin will be auto-enabled after installation. You can check this by going to "System > Plugins" then find T4 Plugin.
Joomla 3: Go to: "Extensions > Template Manager", set Lavida template style as your default template style.
Joomla 4: Go to: "System > Site Template Styles", set Lavida template style as your default template style.