Change security level

Project > Change security level... allows you to access an object protected by a password.

NOTE

For objects with higher security levels than that of the project, you may not change the security level.
If you only have access to the lower security level of the project, you may read objects with higher security levels if Allow read access for lower levels has been defined under Object > Properties... for each respective object.

Select object in Project pane
Project > Change security level...
Select a security level
Enter your password
OK
You have now regained access to the object and can change it if necessary. Access control remains even after the change has been made. You do not need to redefine it.