2001 4Runner - program keyless remote to unlock all doors on first click

Hello all,

I have an 01 4Runner w/ what I think is the factory keyless remote and alarm system. The literature that I received with the vehicle says it's a Pursuit Series Model PRO 9232. The remote has 4 buttons; lock, unlock and rear window on the front. Red recessed panic button on the rear.

Now for my question: Is it possible to re/program the remote/alarm to unlock ALL doors on the first click rather than just the driver's door?

I know in some cases this is a desirable feature, but I'm always putting stuff in my back seat and carrying passengers, so I rarely want to unlock only the driver's door.

Thanks in advance.