1) User settings
a. The initial user name of the device is admin/password 123456, The administrator can add, delete, and modify all
user information; ordinary users can only modify personal information.
b. Modify user: First select the user to be modified in the user list, the user name and password edit box will display the
information of the currently selected user, enter new information, and click the "modify" button.
c. Delete user: select the row to be deleted in the user list and click the "Delete" button to delete the user.d
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D.Add user: Select the empty row in the left list, and enter the new user's information in the user name and password
edit box on the right (should be empty), and click the "Add" button to add a new user.