No appointment is necessary, just before doing the online registration
No date
You arrive at the site, when you queue, there are some posters where you can scan the PQR code and you get the format to register and that's it.
By appointment but you can do it while you are in the online queue
X order of arrival, when you are in the place you have to scan a qr code and register nothing else, without prior appointment
Thanks! Your answer is awaiting moderation.