OR, if you are using JIRA 6.0 or later, click the 'cog' icon in the top bar, select Add-ons, then scroll down the page to the
Select JIRA Administration from the top bar, then select Add-ons > .
OR, if you are using JIRA 6.0 or later, click the 'cog' icon in the top bar, select Add-ons, then scroll down the page to the section.