Hi,

Sorry for late answer.

I tried something as below with due date for testing. you can change it to creation date.

var date = new GlideDateTime(current.due_date);
var schedule = new GlideSchedule("08fcd0830a0a0b2600079f56b1adb9ae");
var flag = schedule.isInSchedule(date);
gs.log(flag,'ScheduleCheck');
if(flag == true){
current.assignment_group.setDisplayValue("Hardware");
}else{
var date = new GlideDateTime(current.due_date);
var schedule = new GlideSchedule("7b2af55ddbe814108844e1bb4b961953");
var flagNew = schedule.isInSchedule(date);
gs.log(flagNew ,'ScheduleCheck');
if(flagNew == true){
current.assignment_group.setDisplayValue("Software");
}
}

This are my schedule sys id and groups name please change those.

Thanks,
Ashutosh