Google calendar sync
I am using the trial version of Projects. Our client wants to have Google calendar sync. It seems we either have to have the CRM app or the Mail app, yet I don't see Google sync options in either. I am following instructions from Zoho's own support docs.
Finally, I found the Zoho Calendar app through google search, yet it does not show up on my apps list from my home page when I click the "show all apps" option. I don't see how to add the Calendar app to my account. Is it a paid add-on?
Specifically, what apps or add-ons do I need to allow two-way sync with Google Calendar, ideally from within Zoho Projects' calendar or at least through Zoho Calendar app?