To authenticate your Helpjuice users with Okta, you need togo to your Okta account, then click on Applications > Applications > Add Application:
Search for "helpjuice" and then select the Helpjuice app:
Once added, go to the Helpjuice app page, Sign On tab and click on "View Setup Instructions".
Then follow their instructions. They will provide you all the information you need to input into Helpjuice settings to get your SSO working.