I think there is a mistake in the manual and in the programming for this feature. I couldn't get it to work either.
...but if you look at the manual, I believe it's on page 115 it shows how to enter the Speed Tone PHONE NUMBER, but in order to get the Speed Tone to work, you only put in the string of numbers you want it to dial.
In the manual it shows a screen shot that allows you to put in the Pause and Wait for the Speed Tone, but you can't do it.

I stopped playing with it and use the Speed Tones for password and passcodes, after I make the initial call.

Maybe this weekend I'll try again with the Pause and Wait...if only to see what they actually do.

Byron