Reserve for certain time
By registering in the queue, you can choose the time when you want to cross the border. Note that if an unexpected decrease or increase in border capacity occurs, then the booked time will be, if possible, kept unchanged at the expense of other queues (except priority queues).
You will have to prove your right for a Priority queue slot at the border.
Booking for the first available time
А certain part of the normal border capacity is allocated, so it is advisable to use a reservation for a certain time or priority. Note that if an unexpected decrease or increase in border capacity occurs, then waiting time will be increased or decreased accordingly.
Where and how
Operator or self service termnals at waiting areas