How do I show and hide information in stacked bar charts?

In Cross-Channel > Overview or Cross-Channel > Leaderboard, there are bar graphs which show metrics for multiple companies across multiple channels. Click the channel buttons in these cross-channel bar graphs to temporarily remove the metric for that channel from the graph.
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In the example below, clicking the label for Facebook removes the corresponding segments and the bar values from the graph.
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Here is the same graph with the Facebook values removed.