Right, but your licensing is per user per year. I add 50 NEW users in a month. Each of them use the product for about 20 minutes, but I believe I would need to license them for an entire year.
If you disable the accounts of users they no longer count towards your license. So you could consider deactivating accounts that have been inactive for more than a month. Anyway, feel free to get in touch with sales@ our domain to discuss the options.