You can always download the cinemark app. Once you've selected your tickets, it shows the seating map. I always check on it to see if the movie or Showtime I want to go to isn't busy and pay in advance for the seats I want. With movie club through Cinemark, there's no additional online fees and I don't have to worry about standing in line in box office
Their website allows for it too. You first select how many seats for what time and you select the seats after. You can call too and they will tell you how many seats remain.
Download the app
Download the app or you have to cjeck out tje tickets and it will show you a seating chart to pick hour tickets.
Normally when you decide what movie and what time they show you the seat map. Maybe you have not moved far enough into the ticket process. Or... If the show you are looking at does not need reservations.
Thanks! Your answer is awaiting moderation.