I applied online via the compass group website outside of their normal recruitment time, which at the time only had the Chef job available. I didn't hear back until they were actually recruiting. I received an email which specified a time and date for interview. The interviews themselves were very quick to accommodate for a large amount of people to be processed.
The interview itself was straight forward. Basic questions relating to the job, working on a team, relevant past experience, cooking, and education were asked.
A few days after the interview I received an email inviting me to the instruction day. I don't remember if I was told what my job would be, since I was not suitable for the Chef job. I did the general training, and not the food prep training, even though that was where I was put when I actually started working. Adjusting was not very difficult, however and the job was doable.