BB (RIM) :: How To Use Code For Checking Remote Messages From Bb?

I have never had a smart phone of any kind but told a friend I would try to get some help for her on here re. this:

She has to check her office voicemail from her bb, (newer model, AT&T) but it's a real pain because she can't figure out how to do a pause/wait, thus entering the code automatically. She's not very technical, but I said there had to be a way to do that with the push of a button rather than the way she is having to do it now (holding down on multiple keys, apparently).