Dahua Technology DH-PFR4K-E50 User Manual page 77

Enter username and password, and then select group and operation permission.
A user can be in only one group at a time, and the group users can own

authorities within group authority range.
It is recommended to give fewer authorities to normal users than premium users.

(Optional) Click Restricted Login to set IP address, validity period, and time range of
the added user. See Figure 4-57.
Add user
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User's Manual