This column in your Time Off report will show the duration of time in Hours if less than 8 hours, or in Days if more than 8 hours:
displayname=Durationtextmode=truevalueexpression=IF((DATEDIFF({startDate},{endDate})*-1)<.3333,CONCAT((DATEDIFF({startDate},{endDate})*-1*24)," Hours"),CONCAT(ROUND((DA...