While we were setting up Zoho Mail and Calendar, I looked for documentation to setup a Group Calendar which directed me to create a group first from  https://accounts.zoho.com/. As we later started setting up mailing lists for our employees, we had to create them as groups but now in the Zoho Mail Admin Center at  https://mail.zoho.com/cpanel/. 

However, groups created for Mailing List purposes also have a group calendar associated with them as well as the group I created from My Account page.

Why the two group systems and what features are missing between the two? 

I'm asking as we are having some notification issues with one of the group calendars and wanted to see if we setup the group calendar via the mailing list group, this would be better handled for us.

Thanks

Sreenath