Time Management

Hello,

What is the 'configuration' difference between positive time management and negative time management?

As in,how does system know if it is Positive or Negative Time Management running?

I understand,IT0007-TMS 0 and 7 are for Negative and TMS 1 is for positive.

Also,that schema TM00 is for positive and that for negative is TM04.

Anything else the above stated.

Thanking in anticipation.

Regards

Jyo