Yes, K10 on a TMR as opposed to a TMRF will give a one second timer.
For T0.DN, just enter 'T0' on any type of contact.
EN and TT are a little more difficult:
For EN, use a compare contact K0 < TA0 (TA0 is the accumulator value)
For TT, add NOT T0, as in K0 < TA0 NC (T0)
You can't write to the preset directly (as in T4:0.PRE), but you can enter a Vxxx (integer value instead of a constant), and write to that, and I believe you can write to the ACC value.
ACC and PRE values are in BCD. Yeah, I know.