Reading the documentation (Client help file, Client Terminal--> Tools--> Configuration at startup) we can find how to setup an ini file to lauch MT in testing mode from a command line :
Where can we find parameters names for variable in the Testing and/or Optimization tab, as "Initial deposit", ... :
If you read the help file (the same page you provided a screenshot), you will see :
Other parameters of the expert under test in the "Testing" and "Optimization" tabs (as
well as in the "Inputs" tab if this parameter has not been specified) are
filled up with the values automatically saved in the \tester\[the expert
name].ini file after the latest test.