Describe the feature or enhancement

Use Case

I use custom event to track user behaviors.
Let's say I have a custom event named compute.rating, which is triggered whenever the user did a rating calculation. Given a timeframe, maybe 24 hours, I would like to know how many users / sessions have did that.

Expected Behavior

Have some numbers displaying around where the arrow points is enough. So for example, I could check this chart with "Last 24 hrs" and filter down to certain events, then I'll know how many users have had the event triggered at least once.