I have my main form record set up as a department in a drop down list (combo box) based on a table. The subform then produces the relevant records for the dept selected and asks the user to edit one of the fields. Once the user edits the subform field the main form field is also edited (the main form record replaces the first record in the table that the main form is based on). If I do not allow edits on the dept field then my dropdown box doesn't work!! How do I lock my main form but allow records to be selected?