It's not, there's no "clock" in this one. I've figured out how to select heads and manually prime the heads (similar to the BM).
The display on this one is (underscore represent empty spot):
XX XX XX
__ XX XX
As an example I think it's:
Head ML X per/day
01 05 10 (head 1, dose 5ml, 10 times a day)
__ 02 08 (2ml left in current dose, 8 doses left for the day)
There is also an "ad" and a "cr" that displays in the lower-left empty spot while programming, not sure what those mean. This is a little frustrating but I got the 3 head unit and 4 head slave for $60 as-is off CL, all the heads work. These are also different than the BM in that they use an RJ45 network cable.
Hoping this may help someone in the future.