Click the dropdown button and trigger it manually.
If you want the most minimal solution to get started, this Python script is for you. While the developer acknowledges it's an older repository, it serves as a simple example for how to automate group posting easily and securely.
for browser automation since the official Facebook API has strict limitations on group posting. Top Open-Source Frameworks (GitHub Verified)
You can inspect the code (e.g., Python scripts using Selenium or Facebook Graph API ) to ensure it isn't stealing your login credentials.
