How do I find the Calendar UID?

How do I find the Calendar UID?

Hello, 

I'm trying to write a custom function to create an event in Zoho CRM and the guide is telling me to find the Calendar UID but I cannot find it? I've never seen the interface show in the guide and when I click on Calendar in CRM I get a completely different view.

https://www.zoho.com/deluge/help/calendar/create-event.html

https://www.zoho.com/deluge/help/cliq/zoho-calendar-attributes.html#calendar_uid

It seems to be related to Zoho Cliq. Is there a way to create an event with a function directly within CRM?

Thank you!