Ecumaster classic idle question

hello to everyone.

I work on an Ecumaster classic and I have some question.

I can not understand at idle, the table 'idle RPM ref' Why exist this Table, and how I calibrate it?

The car when I rev it and release the throtle, some time stuck at 1500rpm and finaly I realize that this table was the problem.

and second how I can calibrate the factor kp kl kD with the right way.

thanks you

Peter