Gracias, funcionó correctamente. 

Step 1: Configure Google API Access

1. Create a Google API Project:
   • Navigate to the Google API Console.
   • Click on Select a project and then New Project.
   • Name the project (e.g., "Odoo Sync") and click Create.​
2. Enable the Google Calendar API:
   • In the left menu, select APIs & Services > Library.
   • Search for Google Calendar API, select it, and click Enable.​
3. Configure OAuth Consent Screen:
   • In the left menu, go to APIs & Services > OAuth consent screen.
   • Choose External for user type (unless using a Google Workspace account).
   • Fill in the required fields: App name, User support email, and Developer contact information.
   • Click Save and Continue, skipping the Scopes step.
   • In the Test users section, add the email addresses that will use the integration.
   • Click Save and Continue to finalize.​
4. Create OAuth Credentials:
   • Go to APIs & Services > Credentials.
   • Click Create Credentials > OAuth client ID.
   • Select Web application as the application type.
   • Name the credentials (e.g., "My Odoo Database").
   • Under Authorized JavaScript origins, add your Odoo instance URL (e.g., https://yourdomain.com).
   • Under Authorized redirect URIs, add https://yourdomain.com/google_account/authentication.
   • Click Create and note the Client ID and Client Secret.

Step 2: Configure Odoo

1. Enable Google Calendar Integration:
   • In Odoo, navigate to Settings > General Settings.
   • Under Integrations, check the box for Google Calendar.
   • Enter the Client ID and Client Secret obtained from Google.
   • Click Save.
2. Synchronize Calendars:
   • Open the Calendar app in Odoo.
   • Click on the Google sync button.
   • Authorize Odoo to access your Google Calendar when prompted.