Each Team may choose to openly direct their drivers to take up respective track positions that best support their team strategy.

e.g. Driver A would let Driver B pass him where it is beneficial to the team to have driver B in the higher position.

Team Orders were banned for 2010 however in practise, it proved unenforceable and the ban has now been lifted

BBC’s Excellent F1 Team Explain & Discuss Team Orders before the ban was lifted