Switch Off Meaning

(intransitive, idiomatic) To alternate between; to trade.

Example: 1906, National Electric Light Association, National Electric Light Association Twenty-Ninth Convention, page 420:
  We have found that a patrolman in the central section of the city can switch on, and later switch off, 100 signs with ease.
2011 December 21, Tom Rostance, “Fulham 0 - 5 Man Utd”[1], BBC Sport:
  Fulham switched off as Giggs took a quick corner to Valencia. He played it back to Giggs, whose cross was headed in by Nani with the lurking Rooney unable to add a touch.
  Do you eat all your peas and then all your potatoes, or do you switch off between them as you go?
1997 February 1, Billboard, volume 109, page 84:
  Besides Crow belting out "Bitch," the concert featured several artists switching off on lead vocals