66 IBM Content Manager OnDemand Guide
Figure 3-22   Completion window
3.2  User and group administration
When you design a Content Manager OnDemand system, you must determine the best way 
to implement the many authority structures that are available for users and administrators of 
your system. The span of control for the administration of the system must be considered with 
the level of user access to the data that is stored in the system. How many different 
administrators are required? Will all administrators have system administrator authority or will 
different administrators have different levels of authority? What is the most effective way to 
restrict a user’s access to only the data that is necessary to do that user’s job? 
The answers to these questions depend on the size of the system, the degree of 
centralization to be exercised over system administration, and the nature of the data and the 
business needs of the users. 
Centralized or decentralized
In a system design that exercises centralized control, one or a few administrators are granted 
system administrator authority. A centralized system typically is used when the number of 
reports and users to be added to the system is small. Centralized administration is also 
appropriate where resources are limited and only one person might have the skills and 
knowledge to perform the system administration tasks, or where one user group performs all 
of the administration tasks. 
In a system design with decentralized control, different users are granted different levels of 
administrative authority. For example, you might have users that have the authority to create 
users and groups. Other users might have the authority to create application groups and 
folders, and others might be given full system administration authority.