Nereid User
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Nereid introduces a model of user management different from the default user management schema (`res.user`) of Tryton. Nereid project also makes use of the concept to provide logins to participants of the project. Internal employees of the company should in addition have their user accounts linked to their employee records so that timesheet entries can be marked by users who are also employees.

In addition, nereid project also introduces the idea of project administrators. At the moment project administrators are created by adding nereid users to the project admins section on the company settings. This is due for deprecation and will be replaced with the permissions system introduced in nereid. Users with the `nereid_project.admin` permission will be automatically given admin rights to all projects.

Note that the permissions mentioned here are `nereid.permissions` and not the regular Tryton access control user groups.