How to integrate google calendar user wise in suitecrm

Is there any way to implement google calendar userwise and how to sync google calendar and suitecrm calendar?
Pls guide me step by step integration.
How to get Publish Key for calendar? Is it related to google calendar?

See in the user profile, Advanced tab, at the bottom.

You can start from there, and then Google for more details. I am afraid there isn’t much documentation on this, but there are some forums posts.