In order to install Unbabel for Helpshift, run this linked URL. The person running the installation should have Admin privileges. A window will appear prompting the installer to login. The credentials to be used are the Unbabel account credentials (for the organization; not to be mistaken for each user's Portal account credentials). Obtain these credentials from the point of contact at Unbabel that is helping you with the intallation.
A new window will request that you insert your Helpshift subdomain and both the read and write Admin API keys, which this Helpshift HC article helps retrieving.
After you input and confirm this information, you'll need to authorize Unbabel's webhooks to be setup, and can do so by running the multiple steps that follow next. The Target URL and Secret Code Header are hidden in the screenshots for security reasons. You should fill them in with the info found under your instance's Settings >API > Add Webhook.
Once finished, your connection to Unbabel should be firmly established and the installation process completed.