Hi rsumi, sorry I just saw your message. You don't have to press 2 buttons at the same time (in fact, IR remotes can't do that at all). The ps3tf takes care of "pressing 2 buttons" for you. You just need to tell it which 2 and there is a special sequence to do that. It is in the manual on the site. But basically, what you do is
1) Press and Release Angle
2) Press and Release the 1st button
3) Press and HOLD the 2nd button
So for instance, if the 2 buttons are start and enter, you would do:
1) Press and Release Angle
2) Press and Release Start
3) Press and HOLD Enter
So long as you hold the 2nd button, it will transmit both for you. This is how you pair the device.
Best
Ayman