Dahua Technology DH-PFR4K-E50 User Manual page 76

Anonymous Login
By selecting Anonymous Login check box, you can log in with only entering IP address
instead of username and password. Anonymous users only have live view authority. Under
Anonymous Login, you can log in with other account after clicking Logout.
Adding a User
You can add users to the group, and configure user authority.
As a default user with the highest authority, admin cannot be deleted.
Click Add User.
The Add User interface is displayed. See Figure 4-56.
Username
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User's Manual