You must be the administrator of your JIRA instance in order to install the Smart Dashboard for Jira app.
Smart Dashboard for Jira is only available for JIRA Cloud.
Log into your Jira instance as an admin user.
Click the Settings drop-down menu and choose Apps.Add and manage Jira Marketplace apps.
Locate Smart Dashboard for Jira
Click Try it Free then Start free trial to download and install your app.
You're all set!Click in Manage Apps on the left-hand sidebar menu to manage your apps.