In order to restrict the access and avoid unauthorized editing of
the project plan, project manager can insert password that will protect the
information that is inserted inside the .mpp file. When this type of file is
open, a dialog will pop up, asking the team member to insert the right password
for opening the project file. In case when a wrong password is inserted, the
team member is notified that the password is mistaken and the project file will
not be opened.