Answer:

servers

Answer	Crossword Clue
SERVERS	Order takers
SERVERS	Central computers
SERVERS	Waiters

SERVERS	Altar boys, e.g.
SERVERS	Wait staff
SERVERS	Network computers
SERVERS	Banquet workers
SERVERS	Data-center installations
SERVERS	Tennis players.
SERVERS	Trays.
SERVERS	Tennis players, at times

SERVERS	Automats lack them
SERVERS	Waitstaff
SERVERS	Waitstaff members
SERVERS	Waiters, e.g.
SERVERS	People waiting for payment
SERVERS	They'll wait for you

Crossword

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