Yes, you would check the "Was this Paid Family Leave, PFL?" Most companies will report PFL from a W-2 that will state "third-party sick leave" or you will receive a W-2 straight from the 3rd party insurance company stating your earned income from your PFL.
Paid Family Leave (PFL) income is money you receive from your employer, an insurer, or the government while you are away from work for an extended period of time so you can recover from a serious health issue, take care of a seriously ill family member, or bond with your newborn or newly adopted child.