When you first run checksetup.pl after installing Bugzilla, it will prompt you for the administrative username (email address) and password for this "super user". If for some reason you delete the "super user" account, re-running checksetup.pl will again prompt you for this username and password.
If you wish to add more administrative users, add them to the "admin" group and, optionally, edit the tweakparams, editusers, creategroups, editcomponents, and editkeywords groups to add the entire admin group to those groups (which is the case by default).
If you have "editusers" privileges or if you are allowed to grant privileges for some groups, the "Users" link appears in the footer.
The first screen you get is a search form to search for existing user accounts. You can run searches based either on the ID, real name or login name (i.e. the email address in most cases) of users. You can search in different ways the listbox to the right of the text entry box. You can match by case-insensitive substring (the default), regular expression, or a reverse regular expression match, which finds every user name which does NOT match the regular expression.
You can also restrict your search to users being in some specific group. By default, the restriction is turned off. Then you get a list of users matching your criteria, and clicking their login name lets you edit their properties.
By default, users can create their own user accounts by clicking the "New Account" link at the bottom of each page (assuming they aren't logged in as someone else already). If you want to disable this self-registration, or if you want to restrict who can create his own user account, you have to edit the "createemailregexp" parameter in the "Configuration" page, see Section 3.1.
Users with "editusers" privileges, such as administrators, can create user accounts for other users:
After logging in, click the "Users" link at the footer of the query page, and then click "Add a new user".
Fill out the form presented. This page is self-explanatory. When done, click "Submit".
Adding a user this way will not send an email informing them of their username and password. While useful for creating dummy accounts (watchers which shuttle mail to another system, for instance, or email addresses which are a mailing list), in general it is preferable to log out and use the "New Account" button to create users, as it will pre-populate all the required fields and also notify the user of her account name and password.
Once you have found your user, you can change the following fields:
Login Name: This is generally the user's full email address. However, if you have are using the "emailsuffix" parameter, this may just be the user's login name. Note that users can now change their login names themselves (to any valid email address).
Real Name: The user's real name. Note that Bugzilla does not require this to create an account.
Password: You can change the user's password here. Users can automatically request a new password, so you shouldn't need to do this often. If you want to disable an account, see Disable Text below.
Disable Text: If you type anything in this box, including just a space, the user is prevented from logging in, or making any changes to bugs via the web interface. The HTML you type in this box is presented to the user when they attempt to perform these actions, and should explain why the account was disabled.
Users with disabled accounts will continue to receive mail from Bugzilla; furthermore, they will not be able to log in themselves to change their own preferences and stop it. If you want an account (disabled or active) to stop receiving mail, add the account name (one account per line) to the file data/nomail.
Even users whose accounts have been disabled can still submit bugs via the e-mail gateway, if one exists. The e-mail gateway should not be enabled for secure installations of Bugzilla.
Don't disable all the administrator accounts!
<groupname>: If you have created some groups, e.g. "securitysensitive", then checkboxes will appear here to allow you to add users to, or remove them from, these groups.
canconfirm: This field is only used if you have enabled the "unconfirmed" status. If you enable this for a user, that user can then move bugs from "Unconfirmed" to a "Confirmed" status (e.g.: "New" status).
creategroups: This option will allow a user to create and destroy groups in Bugzilla.
editbugs: Unless a user has this bit set, they can only edit those bugs for which they are the assignee or the reporter. Even if this option is unchecked, users can still add comments to bugs.
editcomponents: This flag allows a user to create new products and components, as well as modify and destroy those that have no bugs associated with them. If a product or component has bugs associated with it, those bugs must be moved to a different product or component before Bugzilla will allow them to be destroyed.
editkeywords: If you use Bugzilla's keyword functionality, enabling this feature allows a user to create and destroy keywords. As always, the keywords for existing bugs containing the keyword the user wishes to destroy must be changed before Bugzilla will allow it to die.
editusers: This flag allows a user to do what you're doing right now: edit other users. This will allow those with the right to do so to remove administrator privileges from other users or grant them to themselves. Enable with care.
tweakparams: This flag allows a user to change Bugzilla's Params (using editparams.cgi.)
<productname>: This allows an administrator to specify the products in which a user can see bugs. If you turn on the "makeproductgroups" parameter in the Group Security Panel in the Parameters page, then Bugzilla creates one group per product (at the time you create the product), and this group has exactly the same name as the product itself. Note that for products that already exist when the parameter is turned on, the corresponding group will not be created. The user must still have the "editbugs" privilege to edit bugs in these products.
If the "allowuserdeletion" parameter is turned on, see Section 3.1, then you can also delete user accounts. Note that this is most of the time not the best thing to do. If only a warning in a yellow box is displayed, then the deletion is safe. If a warning is also displayed in a red box, then you should NOT try to delete the user account, else you will get referential integrity problems in your database, which can lead to unexpected behavior, such as bugs not appearing in bug lists anymore, or data displaying incorrectly. You have been warned!