Posting on Facebook

You need to remake the plugin that connects to the WordPress engine and performs all settings, connecting only from the admin panel of WordPress, and you need to make it all depicted on the site, you need some changes in the script so that posts can be sent not to one group but in several and with a certain time interval. The meaning in the script is needed so that it would be possible to make all the necessary settings on the site and publish pictures and text posts, in different groups from the list, only Facebook is needed.