Target lock/release on XBox 360 controller

I just started playing Dark Souls 3 on PC. I get it's meant to be played on gamepad, so I grabbed my X360.

But I can't figure out which button is used for target lock/release. It says R, with an arrow above it pointing down. I tried RB and RT but obviously it's not it. So which button shouls I use?

pc controllers dark-souls-3

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Target lock/release on XBox 360 controller - Photo of Xbox Controller

Target lock/release on XBox 360 controller - Xbox One Controller Beside Three Xbox One Cases

Target lock/release on XBox 360 controller - Man Holding Black Game Controller

How do you remove the trigger from an Xbox 360 controller?

Using your thumb and forefinger, push the left trigger toward the right side of the controller. Simultaneously push the trigger control arm in the opposite direction. The trigger has a peg that fits into a slot in the trigger arm. Be sure to push far enough so that the peg clears the slot.

How do you lock your target in Dark Souls?

R3 (PS) / Right Stick (Xbox):

Target Lock/Unlock (Click to do this)

You can flick the R stick in a direction towards an enemy to change targets without unlocking.

When locked on a target, your camera will always face that target, and moving left and right will cause your character to strafe instead of turning.

What is the port on top of the Xbox 360 controller for?

The expansion port on the Xbox 360 wireless controller lets you connect optional accessories, such as the Xbox 360 Headset. Note The expansion port is under the directional pad (D-pad) and the right stick on the controller.

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