//common variables used accross all functionalities
var persons = personsRepo.GetPersons(filterParameters);
var cases = casesRepo.GetCases();

//cases are merged here to update the first functionality,
//the variable is shared between the 2 functionalities and so the other one bellow it is also changed
cases = MergeRelatedCases(cases);

//here goes functionality block1 for first functionality should be bellow
//it uses the same variables declared and populated above as the functionality bellow


//here goes functionality block2 for the second functionality which also uses the variables declared above