Every poker game starts with some or all players putting a certain amount of money or chips into the pot. This initial obligatory bet, or fee, is called the “Ante” or “Blind”. An ante is when every player puts a fixed nominal percentage of the minimum stake into the pot - as is the case in Seven Card Stud.
If a blind is required (like in Texas Hold’em or Omaha), the two players to the left of the dealer (designated by the 'dealer button') will start the pot, clockwise from the dealer, with the first player placing the small blind (half the minimum bet) and the next player placing the big blind (the minimum bet). Rotation assures that every player gets their turn to post blinds.