Intro
Argestus uses a licensing model where users are granted a license for a certain period (by default 12 month, but always until the end of a calander month).
The license is linked to the DOMAIN\UserName (for example, CONTOSO\GuidoB).
Licenses are purchased in advance, but are only consumed when assigned to a user. There is no limitation on the validity period, so purchased licenses that have not yet been used do not expire. When renewing an assigned license, the remaining duration of the already active license is taken into account.