Tiles help you look at aggregate values of metrics. You can add filters and comparisons, but dimensions and breakdowns are not supported. They work best when you want to look at the overview performance of a channel or campaign type (web v/s app, brand v/s non-brand etc) quickly.

Creating a Tile Widget

Click on the "New Widget" button, on the next window, select "Tiles" icon in the list of widget icons provided. This switches to the tiles widget creation window. Add desired metrics in the metric tab and select apply, hit "Done" to create the widget.

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