4.1. Back in the Okta administrator UI, click Applications.
4.2. Click Add Application.
4.3. On the Add Application page, click Create New App.
4.4. Select the appropriate platform for your use case and enter a name for your new application.
4.5. Add one or more Redirect URIs. This is where the user is directed after they authenticate with Google.
4.6. Assign the group that you chose under Group Assignments in Step 2.4 or assign leave the default of Everyone.
4.7. Under Grant type allowed, make sure that you enable Implicit.
Note: The Authorization Code grant type also works.
4.8 Click Done and the page for your new application appears.
4.8. In the Client Credentials section, copy your Client ID, which you use to complete your Authorize URL in the next step.Next: