%SYSTEMROOT%\System32\Tasks

XML structure

<?xml version="1.0" encoding="UTF-16"?>
<Task version="1.2" xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task">

  <RegistrationInfo>
    <Author>…</Author>
    <URI   >…</URI>      <!-- Corresponds to relative location under C:\Windows\System32\Tasks -->
  </RegistrationInfo>

  <Triggers>
    <TimeTrigger>
      <StartBoundary>1992-05-01T18:00:00</StartBoundary>
      <Enabled      >true</Enabled>
      <Repetition>
        <Interval         >P1D  </Interval>
        <StopAtDurationEnd>false</StopAtDurationEnd>
      </Repetition>
      <RandomDelay>PT4H</RandomDelay>
    </TimeTrigger>
  </Triggers>

  <Settings>
    <MultipleInstancesPolicy   >IgnoreNew</MultipleInstancesPolicy>
    <DisallowStartIfOnBatteries>false</DisallowStartIfOnBatteries>
    <StopIfGoingOnBatteries    >true</StopIfGoingOnBatteries>
    <AllowHardTerminate        >true</AllowHardTerminate>
    <StartWhenAvailable        >true</StartWhenAvailable>
    <RunOnlyIfNetworkAvailable >true</RunOnlyIfNetworkAvailable>
    <AllowStartOnDemand        >true</AllowStartOnDemand>
    <Enabled                   >true</Enabled>
    <Hidden                    >false</Hidden>
    <RunOnlyIfIdle             >false</RunOnlyIfIdle>
    <WakeToRun                 >false</WakeToRun>
    <ExecutionTimeLimit        >P1D</ExecutionTimeLimit>
    <Priority                  >7</Priority>
  </Settings>

  <Actions Context="Author">
    <Exec>
      <Command>P:\ath\to\exe\or\bat</Command>
      <Arguments />
    </Exec>
  </Actions>

  <Principals>
    <Principal id="Author">
      <UserId   >TQ84\Rene       </UserId>
      <LogonType>InteractiveToken</LogonType>
      <RunLevel >LeastPrivilege  </RunLevel>
    </Principal>
  </Principals>

</Task>

See also