Software usage function

Software usage function

We are evaluating ManageEngine Service Desk plus Professional 8.2.  

One of the function we need is the software usage. We  like to know how many times a user use a particular application, when is the last time access and  average daily use. It is for per user, per application base.  We need to justify if a user really needsa application

However, after we did the agent or agentless software inventory, the "Usage" shows unknown.

How does this work?

Thanks,
Jimmy

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