Ricoh PRO C900 Operating Instructions Manual page 28

2. Authentication and its Application
4. Press [Administrator Authentication Management].
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If the setting to be specified does not appear, press [ Next] to scroll down to other settings.
5. Press [User Management], [Machine Management], [Network Management], or [File
Management] key to select which settings to manage.
6. Set "Admin. Authentication" to [On].
"Available Settings" appears.
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