The 2-tone arrangement in the DM-32 CPS is not really clear on what is RX and what is TX. Having fooled with this a bit, my best guess is that the left-most settings are the specific tone settings for RX, with up to four discrete tones that can be configured in various combinations.
Likewise, I believe that the right-most top area is for receiving multiple variations of the same four tones and different reactions for each set of tones. The right-most lower settings are, I believe, the tone settings for TX, with the assumption that all tone timings would be configured the same as the RX tones, but you can specify almost any tone frequency.
I have been successful in creating a TX tone set by setting one of the programmable buttons to "one-touch call", but have no ability to test an incoming (RX) tone set, as I only have one DM-32.