Hi,

I was wondering if there is a way to define a field "Calculation" and also allow for user's input at the same time.

Thanks

Depends what you mean by user input. If you want a default calculation that the user can overwrite with a different value, then what you want is a normal field (text or number) and set the options to autoenter a calculated value. This calculated value will be the default, but the user can enter a different value if desired.

Or you can have two fields, one calc field & one either text or number field. Have the calc field return the contents of the other field or, if the field is empty, the default calculation.