Missing feature - Finding conflicts

(This is part of a series of posts about missing features in calendaring.
For more context, see calendaring - the missing features.)

Calendaring is missing an easy way to find conflicts for new and pre-existing events.

Conflicts are not a first-class concept in current calendaring solutions. To me, conflicts are very important --- an event represents a real-world obligation on a schedule. If you have a conflict, then you cannot fulfill all of the obligations and need to communicate that.

In current calendaring solutions, it is possible to see conflicts when entering a single event (depending on the entry mode, it is more clear). However, there is no easy way to see scheduling conflicts for all events in a schedule or of your entire calendar.

Conflicts entering a single event

Entering a single event in the Google calendar view allows seeing conflicts immediately:

Using the “Create” button does not allow viewing of conflicts:

Choosing “More options” and selecting the “Find a time” pane allows seeing conflicts:

Conflicts entering multiple events

In Google calendar and other calendaring solutions, this requires navigating to each date in order to see conflicts for each new event.

How I want to solve this

Conflicts should be a first-class concept in calendaring. You should be able to find conflicts between any set of events and any other set of events. See use cases for a new schedule and an updated schedule.
Mock-ups (or implementations) to come.

(Part of a series on calendaring - the missing features.)