How can I prevent the "Project Name" property in E-Notebook from being blank?

How can I prevent the "Project Name" property in E-Notebook from being blank?

Please do the following.

1. Login to E-Notebook as an administrator.
2. Go to Everyone -> Configuration -> Section Types -> Title -> [right-click] -> Section Type Configuration -> Fields -> Metadata -> [on the right side] -> Custom Properties -> Project Name.
3. Select the “Not Blank” checkbox.
4. Close all dialogs.
5. Refresh E-Notebook (F5).

Note that users will be able to save an experiment, switch to another experiment, or close the application with a blank “Project Name”. But they will not be able to do transitions (e.g. “Sign and Close”) until they provide a value for the “Project Name”. Please refer to the application “Help” menu -> E-Notebook User’s Guide -> Working with E-Notebook -> Getting Data into E-Notebook -> Working with Property Lists -> Setting and Editing Values in a Property List.