Sync Zoho Group Calendar with Microsoft Outlook

Sync Zoho Group Calendar with Microsoft Outlook

My company uses Zoho and all of our users access it through Microsoft Outlook. I need to have a group calendar for one department that can be accessed and updated by members through Outlook. I was able to create a group with a group calendar on zoho and I was able to attach to the calendar in outlook by using the zoho mail suite sync plugin. The zoho group calendar accessed through outlook never syncs. The Zoho group calendar can sync to my personal outlook calendar but there is no option to set the sync refresh interval so I have to manually sync to make it work which is not a good option. Is there an easier solution that would work better?