Controls how Hudson schedules builds on this machine.

Utilize this slave as much as possible
  This is the default and normal setting. In this mode, Hudson uses this slave freely. Whenever there is a build that can be done by using this slave, Hudson will use it.
Leave this machine for tied jobs only
  In this mode, Hudson will only build a project on this machine when that project specifically has this slave as the "assigned node". This allows a slave to be reserved for certain kinds of jobs. For example, to run performance tests continuously from Hudson, you can use this setting with # of executors as 1, so that only one performance test runs at any given time, and that one executor won't be blocked by other builds that can be done on other slaves.