Seat Allocation

In event tickets or event tickets plus do you have an option for seat allocation to allow customers to select the seats they wish to sit in and then have them blocked out so other people can’t book them? It would be good if the seat was also shown on the ticket. Just to confirm the article at:

https://support.theeventscalendar.com/780934-Ticketing-using-a-seating-chart

Is not right. Users need to be able to select individual seats…
Many thanks in anticipation!

Matt