//Return catalog items that have no group but do have a delivery plan assigned var ri  = new GlideRecord ( "sc_cat_item" ) ;
ri.addQuery("group", "=", null);
ri.addQuery("delivery_plan", "!=", null);
ri.query(); 
while(ri.next()) {
    gs.log("Found an item"); 
    //Return tasks that point to the same delivery plan as the above item 
    var dptask = new GlideRecord("sc_cat_item_delivery_task");
    dptask.addQuery("delivery_plan", "=", ri. delivery_plan);
    dptask.query(); 
    while(dptask.next()) {
        gs.log("Found a task");
        var gp = dptask.group.getDisplayValue();
        gs.log(gp); 
        //If the task is assigned to desktop, assign the item's group to desktop
        if (dptask.group.getDisplayValue() == "Desktop") {
            ri.group.setDisplayValue("Desktop");
            gs.log("updating " + ri.getDisplayValue());
            ri.update(); 
            break; } } }

10am-5pm on Monday (6 hours) + 8am-12pm on Tuesday (4 hours)

/**
 * Demonstrate the use of DurationCalculator to compute a due date.
 * 
 * You must have a start date and a duration. Then you can compute a
 * due date using the constraints of a schedule.
 */
 
gs.include('DurationCalculator');
executeSample();
 
/**
 * Function to house the sample script.
 */function executeSample(){
 
    // First we need a DurationCalculator object.var dc =new DurationCalculator();
 
    // --------------- No schedule examples ------------------
 
    // Simple computation of a due date without using a schedule. Seconds// are added to the start date continuously to get to a due date.
    dc.setStartDateTime("5/1/2012");if(!dc.calcDuration(2*24*3600)){// 2 days
    	gs.log("*** Error calculating duration");return;}
    gs.log("calcDuration no schedule: "+ dc.getEndDateTime());// "2012-05-03 00:00:00" two days later
 
    // Start in the middle of the night (2:00 am) and compute a due date 1 hour in the future// Without a schedule this yields 3:00 am.
    dc.setStartDateTime("5/3/2012 02:00:00");if(!dc.calcDuration(3600)){
        gs.log("*** Error calculating duration");return;}
    gs.log("Middle of night + 1 hour (no schedule): "+ dc.getEndDateTime());// No scheduled start date, just add 1 hour
 
 
    // -------------- Add a schedule to the date calculator ---------------------
    addSchedule(dc);
 
    // Start in the middle of the night and compute a due date 1 hour in the future.// Since we start at 2:00 am the computation adds the 1 hour from the start// of the day, 8:00am to get to 9:00am
    dc.setStartDateTime("5/3/2012 02:00:00");if(!dc.calcDuration(3600)){// 
        gs.log("*** Error calculating duration");return;}
    gs.log("Middle of night + 1 hour (with 8-5 schedule): "+ dc.getEndDateTime());// 9:00 am
 
    // Start in the afternoon and add hours beyond quiting time. Our schedule says the work day// ends at 5:00pm, if the duration extends beyond that, we roll over to the next work day.// In this example we are adding 4 hours to 3:00pm which gives us 10:00 am the next day.
    dc.setStartDateTime("5/3/2012 15:00:00");if(!dc.calcDuration(4*3600)){// 
        gs.log("*** Error calculating duration");return;}
    gs.log("Afternoon + 4 hour (with 8-5 schedule): "+ dc.getEndDateTime());// 10:00 am.
 
    // This is a demo of adding 2 hours repeatedly and examine the result. This// is a good way to visualize the result of a due date calculation.
    dc.setStartDateTime("5/3/2012 15:00:00");// for(var i=2; i<24; i+=1){if(!dc.calcDuration(i*3600)){// 
            gs.log("*** Error calculating duration");return;}
        gs.log("add "+ i +" hours gives due date: "+ dc.getEndDateTime());}
 
    // Setting the timezone causes the schedule to be interpreted in the specified timezone.// Run the same code as above with different timezone. Note that the 8 to 5 workday is// offset by the two hours as specified in our timezone.
    dc.setTimeZone("GMT-2");
    dc.setStartDateTime("5/3/2012 15:00:00");for(var i=2; i<24; i+=1){if(!dc.calcDuration(i*3600)){// 
            gs.log("*** Error calculating duration");return;}
        gs.log("add "+ i +" hours gives due date (GMT-2): "+ dc.getEndDateTime());}}
 
/** 
 * Add a specific schedule to the DurationCalculator object.
 *  
 * @param durationCalculator An instance of DurationCalculator
 */function addSchedule(durationCalculator){//  Load the "8-5 weekdays excluding holidays" schedule into our duration calculator.var scheduleName ="8-5 weekdays excluding holidays";var grSched =new GlideRecord('cmn_schedule');
    grSched.addQuery('name', scheduleName);
    grSched.query();if(!grSched.next()){
        gs.log('*** Could not find schedule "'+ scheduleName +'"');return;}
    durationCalculator.setSchedule(grSched.getUniqueValue(),"GMT");}