// Read configuration parameters
var companyId = int.Parse(ConfigurationManager.AppSettings.Get("CompanyId"));
var user = ConfigurationManager.AppSettings.Get("UserName");
var password = ConfigurationManager.AppSettings.Get("Password");

// Create RestClient class
var client = Environments.Nordic.CreateCatiRestClient(user, password, companyId);

// Create service classes
var interviewerService = new InterviewerService(client);
var groupService = new GroupService(client);
var surveyService = new SurveyService(client);

// Create new interviewer group
var group = new Group
{
    Name = "TestGroup_" + Guid.NewGuid()
};
var groupId = await groupService.Create(group);

// Create new interviewer in the new group
var interviewerProperties = new InterviewerProperties
{
    Name = "TestInter_" + Guid.NewGuid(),
    Location = "Foo",
    Password = "123",
    AssignmentsListMode = AssignmentListMode.AllCalls
};
interviewerProperties.ParentGroups.Add(groupId);
var interviewerId = await interviewerService.Create(interviewerProperties);

// Assign interviewer on the survey
var surveys = await surveyService.GetAsync("");
var survey = surveys.FirstOrDefault();
await interviewerService.AssignOnSurvey(interviewerId, survey.SurveyId);