I hope this isn't too simplistic a reply but short of actually coding
an example, here's a scheme.

1. Hopefully, your controls are contained within a form. If not, they
need to be.
2. The form would include an new control that activates a search
function macro.
3. If the search locates a match, copy the record and use its data to
alter the properties of the forms embedded controls.
4. You'll also need another control to save the changes. This function
has to address the database format and whether the old record is
replaced, or deleted and the changes saved as a new entry.
5. A message would inform the user of NO Matching Record when
appropriate.

regards,

mike