Atla-Search plugin is a v2 plugin and is installed in JIRA using Universal Plugin Manager (UPM). Following are the quick steps:
Log in as a JIRA System Administrator
Select 'Administration' > 'Plugins' > 'Plugins'. The Universal Plugin Manager will be displayed
Click the Install tab in the UPM
Enter "Atla-Search' in the Search the Plugin Exchange search box and press Enter
Click the Install button alongside the plugin name. A confirmation message and the plugin details will appear when the plugin is installed successfully.
You can also download the plugin manually, or get it from J-Tricks support team and install it as below:
Log in as a JIRA System Administrator
Select 'Administration' > 'Plugins' > 'Plugins'. The Universal Plugin Manager will be displayed
Click the Install tab in the UPM
Click the Upload Plugin link. The system displays the Upload Plugin window
Specify the location of your plugin using the Browse dialogue
Click the Upload button to upload and enable your plugin. A confirmation message will appear when the plugin is successfully installed.
See the JIRA documentation for more details on installing plugins.