Assuming you have software to set this up:
First go to EDIT>TWO TONE and under the encode tab name your page and enter the A and B tones. The timing parameters can be left as default.
Second program a button on the radio as "Two Tone".
To make a page, go to the correct channel, press the button for two tone encode, press the "<" or ">" buttons to scroll the menu list and then hit the PTT. Off it goes.
I use a portable to test with. If you're going to use it for testing and you're on a repeater, may I suggest setting the channel to talkaround and low power as so not to set off everybodys pager in the city.