In your
Timeline View you can choose to highlight events that are causing a resource to be double booked. When enabled, any double booked events that are not 100% complete or marked as
Free Time, will be highlighted with a red border as shown in this example for Steve Jones. You can also
choose how much events should be unstacked.
There are 3 options you can choose from in the
View settings icon (top right) to show the double booking highlight, these are All, Limited and Hide.
All. All events will be highlighted if they cause the resource to be double booked.
Limited. Events that cause the resource to be double booked will be highlighted only if that resource has the option enabled to 'Show a warning when double booked'.