に就(つ)きDue to, On account of, Each or every

Although rarely seen in its kanji form, につき is a grammar pattern that comes from a combination of に and the conjunctive form of the う- Verb 就(つ)く 'to take up (A)', or 'to assume (A)'. This meaning is usually in regard to assuming a new position, such as a new job.

However, the particular meaning conveyed here will be closer to 'due to (A), (B)', 'on account of (A), (B)', or 'for each (A), (B)'. につき will follow nouns directly, before the (B) part of the sentence describes what is happening 'due to' or 'on account of (A)'.

This grammar point is quite formal, so it is often seen in formal documents, announcements, and notifications.

Regardless of the several common English translations, the base meaning of 'to affix to (A)' is kept in all of the uses of につき, as it simply implies that (B) is in answer to, exists in a way that is directly linked to, suitable for, or caused by (A).