I have a fully developped plugin, its settings are in the main plugin’s settings page (Admin interface). Actually, I want any user to be able to edit his/her website design using this plugin in the WP Customizer. So the idea is to add an option in my plugin so it can be displayed in the WP Customizer, and add the design options editing.

So Do you know how can I add this new feature to my plugin please ?

Thanks in advance.

I’ve searched for some useful pieces of information, but I didn’t find any function that does this in a plugin.