How to understand that the number of interviewers is equal to or less than the number of job recruitment plans?

The first sentence is that the number of interviewers is less than or equal to the number of job recruitment plans: that is to say, the job gives more jobs than the number of interviewers. For example, there are only 15 interviewers for a position that recruits 20 people. The second sentence is that the interview score must reach the tie score of the actual interviewer in the examination room that day: that is to say, if the number of interviewers for this position is less than the number of people you want to recruit, then the interview score must be admitted according to the average score of the actual number! That is to say, in fact, 15 people come to the interview to get an average score, that is, those with a median score of 15/2 and 15 are higher than this score, that is, half of them are eliminated and half are admitted.