To access the user administration facilities, go to the 'Tools' menu and select 'User Manager'. This will open a User Manager dialog window similar to the one in figure 1 below:
Figure 1. The User Manager Dialog
There are two tabs on this window. The first tab controls user maintenance and the second tab has two additional features especially for for people user compendium with only one user.
User Maintenance
Adding a New User
To add a new user press the 'New...' button in the User Manager dialog window (see figure 1). This will open New User dialog window, as in figure 2 below
Figure 2. The New User Dialog
The 'Author Name' is important to complete as it is the name you wish to be known as when you export maps and share them with other people. It is this name that is stored against all nodes and links that you create. The 'Description' field is optional.
The 'Login Name' and 'Password' fields will be used as the login information, which that user will need to know to access Compendium.
At the bottom of the dialog you will see the option to make this user an 'Administrator'. The default setting is 'No'.
Figure 3, below, shows example entries for a new a new user called Fred Bloggs.
Figure 3. The New User Dialog with example entries
Figure 4. The User Manager Dialog with new user Fred Bloggs showing
To modify a user, first select the user from the list in the User Manager dialog window (see figure 1), an then press the 'Modify...' button. This will open Modify User dialog window, as in figure 6 below.
Figure 5. Modifying a User's details
N.B. The password entered must be one or more characters long. If you do not enter a password you will be shown an error message.
If you have no more user management to do, just press the 'Close' button to return to the main application.
To delete a user first select the user from the list in the User Manager dialog window (see figure 1)., an then press the 'Delete' button. You will then be shown a confirmation dialog window, as in figure 7 below.
Figure 6. The Delete User confirmation Dialog
Figure 7. The User deletion confirmation Dialog
Figure 8. The User Manager Dialog - after user Fred Bloggs deleted
If you have no more user management to do, just press the 'Close' button to return to the main application.
Sinlge User System Options
This tab looks like figure 10 and has two options:

Figure 9. The Single User System Options tab.
The first check box allows you to setup the default user for the current project you are logged into as the current user. If you check this then next time you go to the login window and select that project the login details will be automatically completed for you. You can set this up for each project you create.
The second check box allows to to set the current project as the default project. If you check this box, you also need to have the first box check, (it will check it for you if you have not done so), then next time you open Compendium (or a connection to the current MySQL application you are connected to), it will automatically log you into that project.
N.B. If you wish to change the default project, you must uncheck the one you have set as default first, then open the new default project and check the box there, or specify a newly created database as the default when creating it, (see Creating a New Project).)