Canon imageCLASS LBP674Cdw Wireless Color Laser Printer - Manual (Page 225)

Select the [Confirm Department ID/PIN When Printing] checkbox.
Black & White printing without setting a Department ID
Select the [Do Not Use Department ID Management When B&W Printing] checkbox.
* If this setting is selected while restricting printing from a computer with an unknown Department ID
using the settings on the machine, Black & White printing cannot be performed during Department ID
Management.
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Click [OK].
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