Answer:

instal

Answer	Crossword Clue
INSTAL	Put in office: Var.
INSTAL	Set up
INSTAL	Seat (second spelling)

INSTAL	Put in place (second spelling)
INSTAL	Hook up: Var.

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.