You are required to report usage from the first full month after the activation of your software/licenses.
If you decide to consume Per User Per Month, you are required to report usage for each named user who is authorized to access each of your application.
E.G. 1: If your end-customer have 100 users who are provisioned to access Microsoft Exchange Server (and KEMP Product is running in this environment), you will need to report this usage as 100 users.
E.G. 2: If your end-customer have the same 100 users accessing two different applications, say Microsoft Exchange Server and Microsoft SharePoint Server (and KEMP Product is running in this environment), you are required to report a total of 200 users (100 for each application).