You must have the Fisheye/Crucible Administrator’s rights to be able to carry out the instructions on this page. You can learn more about this here.
Please take a look at Supported Platforms section as well.
How to install 2FA for Fisheye/Crucible: U2F & TOTP?
Step 1. Go to the Fisheye/Crucible Administration tab and click Add-ons.
Step 2. On the left side menu panel find System Settings Tab and select Find New Add-ons.
Step 3. Enter “2FA for Fisheye/Crucible: U2F & TOTP” in the search field and find application in the search result.
Step 4. Click Free trial to get a 30-day free trial license or Buy now to purchase application license.
After step 4 follow the standard client installation path and the application will be automatically installed on your Fisheye/Crucible instance.