Make sure Composer is installed globally, as explained in the installation chapter of the Composer documentation.
Open a command console, enter your project directory and execute:
composer require idmarinas/template-bundle
Open a command console, enter your project directory and execute the following command to download the latest stable version of this bundle:
composer require idmarinas/template-bundle
Then, enable the bundle by adding it to the list of registered bundles
in the config/bundles.php file of your project:
return [ // ... Idm\Bundle\Template\IdmTemplateBundle::class => ['all' => true], ];