To change the user's rights click on Profile and then Users and teams. Here you will see a list of the active users. Click on the desired user to see their rights and the options on how to edit them. Below is a description of the different levels of access.

Candidates details viewing: Allows user to view all candidate details such as their personal information, score and answers. Read-only access, this authority doesn't allow user to modify anything.
Answers assessment: User with this authority can start assessment of a candidate and score answers. It allows also to add a note about candidate.
Candidate management:
Allows user to manage candidates. User with this authority can:
- invite new candidates
- change personal information of candidates
- accept/reject candidates
- send feedback to candidates
Exams/Task authoring: Allows user to create new exams, edit/clone existing exams and activate/deactivate exams. It also allows to manage tasks in the Tasks database.
Company manager: Allows user to: edit billing and company details, manage subscriptions and credits, add/edit other users
All teams data: Allows user to see all candidates, tests and tasks authored by all teams.