Summary

When Team Calendar is not enabled on an instance, users can still see the Calendars link. When trying to create a Calendar the create window does not respond.

Steps to Reproduce

1. A new instance without Confluence Team Calendar Enabled
2. Navigate to a space
3. Click on Calendars
   
4. Or Click the Create option
   
5. Choose Calendar
6. Add Calendar
7. Add New Calendar

Actual Result

The fields in the popup window will not respond.

Expected Result

User should be notified that the plugin needs to be enabled.

Workaround

Start trial for Team Calendar.