1.Open your browser and sign in to your Twitter account. Click the icon person located at the top of the page and from the drop down menu select ‘Settings’
2. Go to the Profile tab and open your profile settings. At the bottom of the this page, click on "Post Your Tweets to Facebook."
3. Now go to the Facebook sign-in button, then log in to your Facebook account. If you’re signed in already you will get a button saying “Connect to Facebook”
4.If you're already signed in, this is the screen you'll see. Click "Connect to Facebook."
5.Click on the drop-down menu close to the bottom and select your audience, you can choose all your friends or specific groups. Then go to "Log In with Facebook".
6.Check "Allow" in order to give Twitter permission accessing your Facebook.
7.Check "My Facebook Profile" to give Twitter permission to post tweets on your personal Facebook. If you only want to post on a specific page you manage, then check this option and select the page you want from the drop-down menu and click on "Save Changes".