Here are steps to create basic setup for social accounts linking with Facebook

Creating a new App

Here are the step-by-step instructions for obtaining OAuth credentials for Facebook:

  1. Go to the Facebook Developers website and sign in to your account.
  2. Once you're signed in, click on the "My Apps" dropdown menu in the top navigation bar and select "Create App."
  3. Choose the type of app you want to create.
  4. Enter a name for your app and click "Create App ID."
  5. Once your app is created under "Add a product" section click "Set up" under Facebook Login card.
  6. Select "Settings" under "Facebook Login" section in the left side bar.
  7. Enter "Valid OAuth Redirect URIs". You can find the Valid OAuth Redirect URI in Dynamic Dashboard.
    1. Click "Information capture" card
    2. Expand "Social Account Linking" section
    3. Click "Configure" button next to the provider you want to configure.
    4. Copy the Redirect URL and paste it in the "Valid OAuth Redirect URIs" field in Facebook.
    5. Click "Save changes" on the bottom of the screen.
  8. Select "Basic" under "Settings" section in the left side bar.
  9. Copy the "App ID" and "App secret" and paste it into "Set up Facebook Auth" Modal in the Dynamic Dashboard.

That's it! You now have OAuth credentials for your Facebook application that you can use in Dynamic.
Remember to enable the Facebook and later "Social accounts linking" field in the Information Capture Modal.

If you need more help with configuring the Facebook OAuth App check their docs here.