Do I have to check the "more than one employer" box in the TD1 BC form if I have 2 jobs? I never filled a TD1 BC form with my first employer. And my 2nd employer for my new job is asking me to submit the form.

I'm not sure if I should check the "more than 1 employer" because the form said

" If you have more than one employer or payer at the same time and you have already claimed personal tax credit amounts on another Form TD1BC for 2021, you cannot claim them again."

I have more than 1 employer but I don't think I've claimed personal tax credit amounts because my 1st employer didn't asked me to fill out the TD1 BC form.