AFIS maintains its own well-trained, highly qualified and motivated national interviewing network of over 600 contributors. The teams are organized in all administrative areas of the country and are run by regional supervisors. The Agency periodically conducts training courses for acquiring new and refreshing already gained knowledge and skills of its correspondent network. For each study, instruction is prepared and preliminary tests are carried out. After each survey, sample control on the field work is carried out. Some of the teams have undergone special fieldwork training related to in-depth interviews and "mystery client" surveys. Separately, AFIS has teams for conducting telephone and online surveys. All AFIS network correspondents are trained to work with laptops (tablets).