Step 1: Log in to console.developers.google.com using your Gmail login credentials.
Step 2: After successful login, you will be redirected to the App Dashboard. Click on Select a Project label from the top navigation menu. This will open a Create or Select Project wizard.
Step 3: Click on New Project label from the top right corner. It will open a create New Project page.
Step 4: Once you create a project you need to enable APIs to your project. Click on Enable APIs and Services label to add API. Refer below images.
Step 5: Choose API from the API library.
Step 6: Enable the selected API. To enable, click Enable button followed by API Description.
Step 7: Configure OAuth Consent screen to allow end-user to log in to your application.
Add application name and URL and click Save button to save authentication settings. Refer images given below.
Step 8: Add Credentials to your application. Click Create Credentials and select Credential type from the drop-down list.
Step 9: Choose the application type for the application to be created. Fill asked details and click Create button to create OAuth Client ID.
Step 10: After the successful creation of Client ID, it will be listed on the Credentials page.
Step 11: How to get an App ID and App secret?
Click on the client ID name, it will open web applications' details page. In the top of the page, you will find Client ID (App ID) and Client Secret(App Secret).
Step 12: In Flits App Admin, open Social Login Settings from the Settings section.
Step 13: In Google Settings, add App ID and App Secret copied from Google apps Client ID section.
Step 14: Click on Save button to save your changes.
Congratulations..!! Now you can use your custom Google Application Login on your store.
For any help contact firstname.lastname@example.org