There are 2 usage metrics Planhat gives you automatically - those are Beat and Experience Level.
Beat = total activities (clicks, logins) over the past 14 days
Experience = total activities of that user since the date we started tracking usage. and the experience% is relative to all other users in your system
When you hover over the bar for experience in Planhat, it will tell you their beat # and if they are in your top percentile of users, or lower percentile (and this is all of your users across all of the companies within Planhat).
So these 2 work together but are 2 different ways of seeing who your top users are, and which ones might need a bit more encouraging.