F18 User Manual V1.0- 56 -Press ▲/▼ to move cursor to the input box. Press numeric key on smallkeyboard to input the value. If it is the input box, press numeric keys onsmall keyboard to input the value. If it is the roll box, press / toswitch the values. After setting, press OK or menu directly to save thesetting and return to the last interface. Press “ESC” to cancel setting andreturn to the last interface.4.2 Data managementDelete attendance record: Delete all attendance records.Delete all data: Delete all enrolled employees’ information, fingerprintand attendance record.Clear management access: Change all administrators into common users.Operation: Press System Menu→ Data Mng (as below :)Press ▲/▼ to move cursor to the selected button. Press OK or menu tostart operation. The device will remind you whether to continue thecurrent operation or not. Then press OK or menu to delete all the data,which won’t be recovered after deletion. Press “ESC” to return to thelast interface.Clear propaganda picture: Clear the propaganda pictures uploaded to thedevice from U disk.(refer to Upload User Defined Picture in 6.2 Upload