Checker Plus for Google Calendar

Notifications

Setting how much time prior to an event the pop up should appear

Turn off notification for some calendars

Turn off native notifications from Google Calendar

Event notifications are not working

Reminders popup window

Desktop notifications

Syncing events

Voice Notifications

Do Not Disturb

Other

Visible calendars in popup window

Default duration of an event or reminder

Quick Add

Create events by clicking on the calendar

Add holiday or contact's birthday calendars

Calendar button time left

Button icon

Change size popup window

Skins and Themes

Snoozing events

Using calendars from multiple accounts

Starting day of the week setting or hiding weekends

Time is off or timezone issues

Keyboard shortcuts

Add the current browser tab to your calendar

Add events from the url

Reminders that keep reoccurring when dismissed

Google Tasks

Adding Facebook events to Google Calendar

Default notification time for all day events

Copy calendar event

Extra features and donations

Some events or holidays are showing up that are not relevant to me

Calendar polling interval

Run in background

Popout

Syncing your settings

Permissions and privacy