JQL Tricks plugin on Jira DC is installed in JIRA using Universal Plugin Manager (UPM). Following are the quick steps:
Log in as a JIRA System Administrator
Select Administration > Add-ons > Find new apps. The Universal Plugin Manager will be displayed
Enter "JQL Tricks' in the Search the Marketplace 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 > Add-ons > Manage apps. The Universal Plugin Manager will be displayed
Click the Upload add-on link. The system displays the Upload app 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.
Once the plugin is installed, make sure you configure it - based on the plugin version.