2D unity game Character spawner

I want to Spawn the characters from the Shop door one by one in certain random spawning and rarity maybe. i want them to stand separately around the table like three at a time then receive the product they want and go back out from the door after you give them the product.

I want the spawning to be like Queuing the character and dequeuing them after they take the product which is a potion.

NOTE: ONLY BID IF YOU ARE AVAILABLE IN THE CHAT BECAUSE I DONT WANT TO WASTE TIME WAITING. THANK YOU.