What is the time frame of these interviews (1 week, weeks, month)? As one is not able to do that number of interviews in a short period of time (one week) unle

What is the time frame of these interviews (1 week, weeks, month)? As one is not able to do that number of interviews in a short period of time (one week) unless they do it after work, on vacation, before work or during their lunch break without doing it on company time which would be unethical unless it is an approved interview for another position within the same company.