Rainbow Six Siege is a game that requires a lot of input from the player. The mouse and keyboard are two of the most important tools that the player has at their disposal. Here are some tips on how to use them in Rainbow Six Siege:

  1. Use the left mouse button to move your character around.
  2. Use the right mouse button to fire your weapon.
  3. Use the WASD keys to move your character around and fire your weapon, respectively.