H1B dropbox - No option for Biometrics appointment

I was trying to book a visa appointment for my H1B stamping (renewal). Went through the screens and it gave me a message that I was eligible for dropbox. I entered my premium delivery address and then it gave me the Interview Waiver Confirmation Letter.

Is this normal? I’m a bit confused because it never asked me for booking an appointment for my Biometrics!

Biometrics is known to be waived but under special circumstances when the drop-box option is activated, specially for those who have Level 3 security clearance