You have three different options when it comes to sidebar widgets for Calendarize it!
The first is the “Events Calendar”, which will display a basic mini calendar in the sidebar. This is a very basic calendar where you can click on a day and go directly to the day, week or month.
The other widget is for “Upcoming Events” and it has a lot of configuration options. Below you can see a screenshot showing all the options. You can also change the styling using the free Visual CSS Editor.
The third widget is the FLAT UI Calendar Widget. This is a free add-on available to all customers with a valid license.

You can log in and take the plugin for a test drive before you decide whether to buy it or not.
Username: DemoUser
Password: TryMeNow
Event
This is an event that is only visible to users that are logged in and have the user role Contributor. It will show on the 4th every month....
Time of Event
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Event
This event uses Event Color by Calendar add-on for Calendarize it! It allows you to set a default color for all events assigned to a specific Calendar....
Time of Event
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End
Event
Time of Event
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Venue
Event
Time of Event
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End
Event
This event uses Event Color by Calendar add-on for Calendarize it! It allows you to set a default color for all events assigned to a specific Calendar....
Time of Event
Start
End
Event
This event uses Event Color by Calendar add-on for Calendarize it! It allows you to set a default color for all events assigned to a specific Calendar....