Access to the download portal is given by setting a password for the account from which the software package can be downloaded (link provided by email). Only the group leader (or primary contact person, if assigned) can add or remove standard users from their license.
A standard user has access to use VASP and ask questions on the forum, but cannot download it themselves, or add/ remove themselves from the license.
All colleagues who will use VASP under this particular license must be registered as VASP-users officially. If a colleague leaves the group, he/she has to stop using VASP immediately, unless he/she starts working in another group having a valid license. The group leader should keep track and remove users from their license accordingly.