First of all I applied on the web site, afterward I have received a phone call from them in order to schedule an appointment. This appointement was a 1 to 1 interview. The aim of this interview was to know your incentive and your flexibility. The HR manager wants to know if you are realy able to work at different periods of the day. One a week in the morning, the day after during te evening or the afternoon, etc. Flexibility is the most important part of company's expectations.