After installing and activating the Social Media Auto Publish plugin, we can see the social media publish option when we add a new post or editing an existing post.
This option is displayed just below the post editor section.
Here enable the auto publish post to social media accounts and publish/update the post. The post will publish to your social media account.
Note: If you cannot see this option even if the plugin is active, please check the “Screen Options” in the top right corner and tick the “Social Media Auto Publish – Post Options”.