Hi,

> Can I have datetime fields but only have the time portion for date-entry purposes and then use the same for time calculations ?

You can use an unbound textbox. In the Refresh and GotFocus event load the value from the datetime field into the textbox. In the Valid event store the current value back. To convert between datetime and character, you can use TTOC() and CTOT(). By setting the Inputmask to "99:99:99" you can limit data entry to digits in a time format. You additionally need to check for valid values, though.