At the top of the Security panel, click the Security Scheme Options button to select an active item from the menu.

• Apply Security Scheme: Apply a selected scheme to an open PDF document. The same function is performed if you double-click a scheme, drag it into the PDF document, or right-click a scheme and select this action. For details, see Security Properties.

• Create Security Scheme: Create a Password or Certificate Security Scheme of your own, or click the Create Security Scheme button at the top of the panel, or right-click anywhere in the Security panel area and select this action. Until you create a security scheme, this is the only option available. For details, see Security Properties.

• Delete Security Scheme: Delete a selected custom-created security scheme, or click the Delete Security Scheme button at the top of the panel, or right-click a custom-created scheme and select this action, or select a scheme and press Delete. Confirm deletion by clicking OK.

  You cannot delete predefined security schemes.

• Copy Security Scheme: Copy a selected Password or custom-created security scheme, or right-click the scheme and select this action to create a new security scheme on the basis of an existing one, with modified settings. For details, see Security Properties.

  You cannot copy certificate type security schemes.

• Edit Security Scheme: Edit a selected custom-created security scheme, or right-click the scheme to modify and select this action. For details, see Security Properties.

  You cannot edit predefined security schemes.

The Security Panel offers pre-defined Security templates:

• Interactive: Allows access to the full range of password or certificate options.

• Privacy: Lets you specify an Open password, which allows access to the document only for you and the people who have the password.

• No modification: Lets you specify a Permissions Password, which allows modifications to the document or its permissions to be made only by you and the people who have the password.