The maximum number of telephone interviewers per survey is configurable from the opinio.properties file, default is 10. To add new interviewer, enter his/hers email in the New interviewer field and click on the Add button. The interviewer will then appear in the list.
In the list of registered interviewers you can see a link to the survey, which is different for each interviewer. Copy the link and give it to the interviewer. He/she MUST use this link when he/she conducts telephone interviews. With this link, the interviewer can respond to the surveys multiple times and his/hers email will be stored along with the respondent answers as a respondent attribute “Interviewer”.