Label Manager for Jira Cloud is available on Atlassian Marketplace. You can try it for 30 days for FREE!
Go to Label Management for Jira on Atlassian Marketplace
Click on Try it free
Choose your instance and click Start free trial
The app will be installed in your Jira instance.
If you are not the Jira admin, you can request the app instead, following the same process above. Your Jira admin will be informed with the request to install this app.