[walla]

• Tap Answer to take the second call, and put the first one on hold.
• To end the second call and return to the first call, tap End, or press the End Key.

To switch between two calls:

• Press the Talk Key on your device.

To set up a conference call:

• Place the first call, or take an incoming call.
• Press the Talk Key to put the first call on hold, and dial a second number.
• When you’re connected to the second party, press the Talk Key to begin the three-way call.

Don't know what you guys are confused about.