Protect a form's design
You can protect a form's design so that users who fill out the form cannot open or modify it in design mode.
- In design mode, click Form Options on the Tools menu.
- On the General tab of the Form Options dialog box, under Protection, select the Enable protection check box.
Note Selecting this setting prevents users from opening a form in design mode only when they are filling it out. The setting does not lock the form completely. Users can still open the form or modify the form's design by opening the form directly in design mode. However, they receive a message stating that the form is protected.