Click on the Assignment under the Administrative, the assignment window will look like as shown below.
The Assignment page is having two sections, User List and List of Robots(assigned/Unassigned).
Click on the username for which you want to assign a robot, and then select the robot name and click on the Save button.
Now, the particular role will be assigned to the selected user on the selected robot.
For example, If you have created a user for the HR department and created a role in which you have given permission for the dashboard component to View, Edit, and Delete.
Then, the HR who logged in using the login credentials of the given user can be able to view, edit and delete the dashboard in the selected robot.
Here, you can also select the robots from a different directory, by clicking on the Directory drop-down button.