WP Mulitsite

I’d like to be able to allow a user of my website to be able to clone posts to their blog within my WP Multisite network.

As an example, let say I have a website that lists various recipes.

I’d like to allow subscribers of my recipe website to set up their own blog/website in my multisite setup (this is easy to do).

However, I also want them to be able to go to a frontend page I create on the WPMU network’s main website that allows them to select and copy the recipes they like to their blog/website within my WPMU network.

Your plugin does everything I need except the duplicate/clone action to a WPMU blog.

Any advice on how to edit/add this functionality to your plugin?