Pick why you'll miss class, fill in your details, and get a properly formatted OD letter with the subject line, "through proper channel" and signature boxes your HOD expects.
O.D.Approved?
Clip one reason
The letter wording changes to match.
Getting it signed
The usual route in most colleges.
Make it hereFill the form, check every highlighted gap is gone, then print it.
Class Advisor signsShow the proof: selection letter, invite or call letter.
HOD forwards itSubmit at least two working days before the event.
Bring proof backHand in the certificate after the event so attendance gets marked.