The tbc55 team can have a maximum of 10 people.

TBC means:

Game, a version of "World of Warcraft" "World of Warcraft: The Burning Crusade"

"World of Warcraft" "World of Warcraft: The Burning Crusade" (World of Warcraft: The Burning Crusade) is a massively multiplayer online role-playing game developed by Blizzard of the United States. It was released in Europe, the United States, and Canada on the night of January 16, 2007, and in 2.4 million copies were issued in one day. It was released in Australia, New Zealand, South Africa and Singapore on January 17, 2007. Total world sales in the first month reached 3.5 million, including 1.9 million in North America and 1.6 million in Europe. ?

It was released in South Korea on February 2, 2007, and was launched in Taiwan, Hong Kong, and Macau on April 3, 2007. Mainland China was also released on September 6, 2007, becoming the last region to go online.