By Master / slave  problems, how to set up on how many threads to be started
at the slave side ?

I have already experimented with putting:
evalthreads  =   3
breedthreads =  3
, in different .params files at the slave side, but nothing worked so far.
Only one thread is by default running at the slave side, and I can not
change this.

Any suggestion in which .params files or how to setup this?

Thanks in advance.