In Domino 4.3.3+ you will see a reference in the Domino admin UI to a Lite User in the role summary of users at the top of the Users page, for example,
Total active users : 286 ( SupportStaff: 2, Practitioner: 167, ProjectManager: 2, Lite User: 86, ReadOnlySupportStaff: 2, Librarian: 94, SysAdmin: 122 )
If you are looking for the documentation on this role you can find the reference here. Note that at the moment our documentation refers to these users as 'LightUser' vs. what you will see in the admin page 'Lite User'.
What is a Lite User?
The definition of a Lite User is actually just a user who has no other assigned role. The lite user will have very limited access. They will be able to only view public projects, although they can be added as collaborators to private projects to view them they will not be able to execute workloads in those projects. They will not be able to create their own projects.
Lite Users do not consume a license.
How can I set a user to have the 'Lite User' role?
By default new users will be set to the Practitioner role. The Practitioner user consumes a license. Note that this is a change from prior versions of Domino where a new user had no role until a role was manually set by an admin or until the user executed a workload where they would then be set to a Practitioner.
If you would prefer all new users are created as 'Lite Users' and then have an admin set their role to one of the available roles...
...there is a new central config setting that will set the default role for a new user to whichever role you prefer. The central config setting is documented here,
Setting the value of this to either LightUser or LiteUser is acceptable. In reality no such role exists in Domino since as noted, this is actually just the lack of any other defined role. This means you will see an error logged in dispatcher logs indicating that no such role exists,
Role LiteUser does not match an existing Domino role.
This warning can be safely ignored.
How Can I identify which users are Lite Users?
In the Domino admin/users UI, these user's role is displayed as "--"
Note the test user in the above screenshot, dominotest00, has no other role assigned and is a Lite User.