To activate Google Contacts and Calendar from Zoho CRM
- Log in to Zoho CRM.
- Open Setup > Apps & Add-on > Google Apps link.
- In the Zoho CRM for Google page, click Authenticate.
- In the Google Accounts page, sign in to your Google Account.

- In the Google Accounts page, click the Grant access button.

The Zoho CRM integration with Google Contacts and Calendar will be activated.
To remove Zoho CRM from Google
- Log in to Google (Gmail, Google Plus, etc.)
- Click (Your Name) > Account Settings link.

- In the Account overview page, click Edit Authorizing applications & sites link.

- In the Authorize access to your Google Account page, click Revoke Access link.

- Now, Zoho CRM integration App for Google Contacts and Calendar will be removed.
Enable Sync Permissions for Profiles
- Click Setup > Admin Settings > Profiles.
- In the Profiles page, select the profile to which you want to give sync access and click Edit.
- Under General Permissions, select the Sync with Google Calendar and Sync with Google Contacts check boxes.
- Click Save.