Hi.
First observations.
Will each person have their own individual record (is that to be individual sheets or one sheet set up as 'say' as annual register)
The application has the first appearance as a flat sheet database if this is the case separate the record from the form.
Use the form as the interface (i.e. reading/writing/deleting record from the database sheet, keep the database sheet free from formula and merge cells.)
A little time spent now will save a lot of frustration as your app is developed.
It may sound like pessimism, however its good advice from experience that has been gained at the cost of many bad experiences.
torachan.