GeneratePress uses the WordPress Hooks API to insert various hooks throughout the theme.
These hooks allow you to insert functions into various areas inside the theme.
To view the available hooks, please refer to the Hooks category.
Usage
add_action( 'your_hook_name','example_function_name' );
function example_function_name() { ?>
Insert your hook contents in here.
<?php }
In the example above, replace your_hook_name with the name of the hook you’re wanting to use, like wp_head or generate_before_header.
Then replace example_function_name with a unique function name, something specific to you. My name is Tom Usborne, so I would prefix my function like this for example: tu_insert_into_wp_head
Learn how to add PHP here.