Program you frequencies in the radio, for each frequency you want to decode 2 tone on, in the optional signalling box select "2-Tone-1", only change optional signalling from its default to 2-tone-X on the channels you want to decode 2 tone, your page out channels if you have multiple. Next go to edit and select 2-tone, next select 2-tone-1 tab and program your tone frequencies in A and B. leave all the settings default. After your write to the the radio, you should be able to decode your fire page, the radio should alert.
If you have any more questions, PM me.