Hello Ashish, in UiPath Orchestrator, a User is an entity that stores the assigned role(s), email settings and enables you to login to Orchestrator. A user’s view of Orchestrator is dependent on the assigned roles. There are two types of users:
1. Robot: The Robot user is automatically created when you deploy a Robot to Orchestrator, with the Robot roles. This grants your Robot access to multiple pages, so that it's able to read details from the Settings page and communicate and display its configuration its status in the Robots page. It can read process and package information, as well as read data from the Assets page. Robots also read queue details from the Queues page and can view, edit and create transactions.
2. User: The User is used to log into Orchestrator, have a custom view of Orchestrator, depending on your position within the automating team and, optionally, to receive email alerts. This type of users can be imported from the Active Directory or they can be created directly in Orchestrator. Orchestrator comes with one predefined user only: admin. Its username cannot be changed, and it cannot be deleted. It comes with the Admin role, but you can add other roles to it, and even deactivate it. Note that you can not deactivate the user you are currently logged in with.
