Occupier (noun)

1. A person who lives in or uses a particular place.
2. A person who holds a particular position or office.

Origin:

From latin occupare "to seize, take possession of", from ob- "towards" + capere "to take".

Examples:

1. The occupier of the house was required to pay rent.
2. The occupier of the office was responsible for managing the staff.
3. The new occupier of the apartment was welcomed by the neighbors.
4. The occupier of the throne was deposed in a popular uprising.
5. The temporary occupier of the presidency was challenged by the opposition party.