Easy via a third part company. I was hired as a locum BS for a temporary period to work at the Biochemistry Lab ending t work for the Microbioogy Lab with no explanation. The only reason they provided from the Hospital was that they needed stuff for the Microbiology Lab. I had been however interviewd for a biochemistry position, while might assist in the Microb - Immunology lab!

Show up 30 minutes before the interview. Given list of questions to think about, then asked them in the interview. Followed by a laboratory tour showing you all the different rooms etc.