To protect an entire document from being viewable without a password, use the option on the Save As dialog box to enter a password. This option is only available for files saved in OpenDocument formats or the older OpenOffice.org 1.x formats.
On the Save As dialog box, select the Save with password option, and then click Save. You will receive a prompt to type the same password in two fields. If the passwords match, the OK button becomes active. Click OK to save the document password-protected. If the passwords do not match, you receive the prompt to enter the password again.
|| Passwords must contain a minimum of 5 characters. Until you have entered 5 characters, the OK button remains inactive.