I have a fresh new install of roundcube 1.4.4 and installed your plugin as per instructions at kolab/calendar

I see calendars, I can see the edit/share if I click the 3 dots, yet when the property page displays, I do not have any tab to share the calendar... (See Picture)

I dont know if I am doing something wrong ... Please advise...

Running Ubuntu 18, php 7.2 and browsers firefox and chrome.

Thanks

Lightngn!