@MayoMay YES - standard COE (signed by HR manager) but ask them to include the job responsiblities that you have and tell them to ask approval from the TL. Kasi kong yung TL mo gagawa, its an affidavit na at iba ang format nun. As for a standard COE, no need for attachment - COE is okay. But all these should be CTC'd sa notary, bring to the city hall where the lawyer is affiliated, have it authenticated, then go to DFA for red ribbon.
Or pwede din, gather all your COE's - the complete ones - photocopy them, go to cityhall, ask where you can have it notarized mismo sa loob ng cityhall, authenticate it in the city hall, red ribbon sa DFA.
Depende kung san ka magpapa notary.