Enabling/Disabling Synchronization Services
To enable or disable Sync Services, from the GTG main menu:
Select Synchronization.
From the left-side menu, click the + button to add a new service.
Select the desired Sync Service from the dropdown menu on the right.
For each Sync Service that you wish to enable, you will have to set certain parameters as well as provide a username and password (if necessary).
Once you have filled in the required fields, click Enable syncing.
To disable a Sync Service, click Disable syncing.