You will need to convert your hours and minutes to text to have them displaying how you want:
=FormatNumber(Floor([Your Object]/60];"00")+":"+FormatNumber(Mod([Your Object];60);"00")
You will need to convert your hours and minutes to text to have them displaying how you want:
=FormatNumber(Floor([Your Object]/60];"00")+":"+FormatNumber(Mod([Your Object];60);"00")