How do I schedule a fax transmission?
From the main screen, go to Fax settings via Setup > Preferences. Configure Date/Time parameters and follow subsequent instructions for planned transmissions as detailed in www.hp.com/support/ljM329MFP or www.hp.com/support/ljM429MFP.
From the official HP Laserjet Pro Mfp M428 M429 F manual, page 9
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