Three Way Calling

[nsa_sailor]

How do you make a three way call?
The manual says:

To set up a three-way call, directly dial the participants and add each connected call to the three-way call.

1. Press the TALK/SEND button to open the Phone screen.
2. Make the call to the first participant. See “Making a call from the Phone screen” for instructions.
3. When the first call is connected, make a call to the second participant. The first call is put on hold when you dial the second call.
4. When the second call is connected, tap Flash to start the three-way call. The screen displays Call in progress.

Tap Flash

When the first call is connected, I see no way to make the call to the second participant.
What's the trick?