In JIRA, each user needs to have an account for him/her to access JIRA, unless JIRA is configured to allow anonymous access (by selecting the Anyone group in the Browse Project permission scheme; please refer to the Permission Schemes section in this chapter for details). Each user is identified by his/her username, starting with JIRA 6, which can be changed after the account is created.
User Browser is where you will be able to see a list of all the users in JIRA, including their usernames, e-mail addresses, last login attempt, and which user directory they belong to. User Browser also provides you with search capabilities. You will be able to search for users that fit in the criteria such as username, full name, e-mail address, and group association. Perform the following steps to access the user browser:
Browse to the JIRA administration console.
Select the User management tab and then the Users option. This will bring up the User Browser page.