To access Linked Orgs, click on the username initials located on the top right of the page to open the org’s menu. Then click on Linked orgs as highlighted in the below image.
The below page will appear with an option to create a new org link by clicking on the Create button as shown.
Provide an Org Link Name (the description is optional). Provide the Org name to link with and that Org’s API Key.
For more information on API Keys, click on the links below: