For more details see how the Google Account Login extension works.
Reduce admin login time with Magento 2 Google Account Login. Instantly access your store backend without remembering and typing complex passwords.
Let's start with Google account settings. Please go to your Google Admin Console Home Page → Apps. If you don't see the Apps on the Home page, please click More controls at the bottom.
Choose SAML Apps here.
In the next window click '+' at the bottom right to enable SSO for SAML application.
Next, please click Set up my own custom app at the bottom of the window.
The Google IDP Information window opens and the SSO URL and Entity ID fields are automatically filled. Get the setup information needed by the service provider using one of these methods:
In a separate browser tab or window, sign in to your Magento admin panel, go to Google Account Login general settings: Stores → Configuration → Google Account Login.
Enable Admin Login with Google - set to 'Yes' to enable the extension.
The fields Valid ACS URL and Valid Entity ID will be filled in automatically.
Fill in the fields Identity Provider SSO URL, Identity Provider Entity ID, Identity Provider Certificate with the info you've recently copied from the Google IDP Information window.
Then please, return to the Google Admin console.
In the Basic Information window, add an application name and description. You may also upload a PNG or GIF file to use as an icon for your custom app. Note, that the icon image should be 256 pixels square.
In the Service Provider Details window, enter an ACS URL, Entity ID, and Start URL (if needed) for your custom app. You may copy these values from the Magento 2 Google Account extension settings.
Please, click 'Add new mapping' on the Step 5 window and enter a new name for the attribute you want to map. Note, that you can define a maximum of 500 attributes over all apps. Because each app has one default attribute, the total amount includes the default attribute plus any custom attributes you add. In the drop-down list, select the Category and User attributes to map the attribute from the Google profile. Also note, that you cannot use Employee ID for attribute mapping. Then Click Finish.
Now it's time to turn on SSO to your new SAML app. From the Admin console Home page, go to Apps → SAML Apps. Select your new SAML app. Then, at the top right of the gray box, click Edit Service.
To turn on or off service for everyone in your organization, click On for everyone or Off for everyone, and then click Save.
To turn on or off service only for users in an organizational unit, at the left, select the organizational unit. Select On or Off.
To keep the service turned on or off even when the service is turned on or off for the parent organizational unit, click Override. If the organization's status is already Overridden, choose an option Inherit-Reverts to the same setting as its parent. Don't forget to save your configuration.
Find out how to install the Google Account Login for Magento 2 via Composer.