Prerequisite: You need to be a Jira administrator to do the initial setup of the app.
Search for Smart Connect for Jira app
To get started please go to Jira Settings → Apps → Find new apps
Search for Teams or for yasoon and click on the app.
Please note: You can either use “Microsoft 365 for Jira” or “Microsoft Teams for Jira - Smart Connect”, depending on how much additional functionality you need!
Start the trial
Now you can click on Try it free and start your trial for 30 days.
Later, you have to confirm your trial on the next screen with Start trial.
You can find more information about the permissions here.