To find help for MySQL functions, go to Smartform and type:
> HELP contents;
or at a lower level, select
> HELP functions;
or at a lower level still, let's say you are interested in all the functions available for dates and times:
>HELP Date and Time Functions;
Finally, you've settled on the specific function you are interested in. Let's say it's TIME_FORMAT, so:
>HELP TIME_FORMAT;
will return all the references you need plus example use of this function. Don't forget to include a Smartform field, such as scheduled_time, in your application of the function.