There are two ways to install Code Review Assistant, both using the Universal Plug-in Manager:

Installing Code Review Assistant directly from Atlassian Marketplace

  1. Click the admin drop-down on your Bitbucket Server instance and choose Add-ons.
  2. Click Find new add-ons from the left-hand side of the page.
  3. Locate Code Review Assistant via search.
  4. Click Install to download and install Code Review Assistant.
  5. You're done!

Installing Code Review Assistant by file upload

  1. Download Code Review Assistant on the Atlassian Marketplace (Details Tab, click the download button).
  2. Click the admin drop-down on your Bitbucket Server instance and choose Add-ons.
  3. Click Manage Add-ons...
  4. Click the Upload add-on link at the top right side of the page. 
  5. Enter the location of the JAR file you downloaded.
  6. Click Upload.
  7. You're done!