The phrase "to enter the sector" means to join or become a part of a specific industry or field of work.
Sentences with «to enter the sector»
Many graduates enter the sector through roles in related industries such as sales, market research, PR or advertising. (targetjobs.co.uk)
You may have experience with a previous recruitment business or may be thinking of entering the sector for the first time, possibly straight from Higher or Further Education. (cv-library.co.uk)
If you are keen on entering this sector you need to be aware that relevant work experience and / or volunteering could boost your chances of being recruited. (careers.manchester.ac.uk)