1) Channel control 2) Channel-changing device 3) Chooser 4) Computer switch 5) Electric switch mechanism 6) Gearshift lever 7) Human 8) Individual 9) Mortal 10) One making a choice 11) One making choices 12) One who chooses 13) Part of a radio set 14) Person 15) Picker 16) Somebody 17) Someone 18) Soul 1) Chooser 2) Picker 
A person who helps pick a team. Usually a team has two of these, as well as a manager.
[sport] In many team sports, a selection panel consist of selectors who choose teams or individuals to represent a country or club in sporting competitions. Selectors tend to be past players. ...
• (n.) One who selects.
a switch having either only one inlet and a plurality of outlets or a plurality of inlets and only one outlet and capable of making a single connection
Se·lect'or noun [ Latin ] One who selects. 
[n] - a switch that is used to select among alternatives
Farmer who was able to freely choose a small parcel of Government land
selector switch noun a switch that is used to select among alternatives