What is the meaning of Immigrant Background in a job application? I am in the process of application for a job. One of the questions is about immigrant background as follows:

Applicants who state that they have immigrant background will be
assessed in accordance with the requirements of summoning at least one
qualified applicant with immigrant background to the interview
process. Immigrant background implies that you are born in another
country than Norway or have immigrated from another country or that
both your parents are born in another country.

Could you please help me understand what this is? Is this question for those who already live in Norway and want to apply for that job? I live outside EU.
This is part of the guidance for applicants for a specific job at Oslo Metropolitan University.
This particular paragraph is, it seems, intended to encourage applicants who have some non-Norwegian heritage to apply. The original text reads:

... Immigrant background implies that you are born in another country than Norway or have immigrated from another country or that both your parents are born in another country.

If the Original Poster currently resides outside of Norway and was also born outside Norway, then they would seem to automatically qualify as having an immigrant background according to the information given.
By stating that at least one such applicant will always make it through to the interview stage, the University is actively encouraging eligible applicants to indicate their 'immigrant background' status on the form, although as can be seen on the original page, this is entirely optional.
If I were the Original Poster and wished to apply for this job, then I would indicate my so-called immigrant background on the form in good faith in accordance with the guidance.
[And were I called to interview and later it turned out that the guidance had not been explicit enough—and anybody cared—I would not expect the University to hold me responsible for the original miscommunication.]