Good afternoon --
I'm creating a timesheet to record time spent on different projects. Over
the course of a day, an individual might have over 10 entries, so the sheet
might have couple hundred lines by the end of a month -- one entry to a line.

I've written a little checkbox to do a few simple things with the info on
the line, and now need to copy that checkbox down to the couple hundred lines
below.

Do I have to do that manually (assisted liberally with cut-and-paste) or
have the many people more clever than I found an easier way to do it?

Thanks in advance.