Click the Edit icon to display the Edit Server dialog: Modify the backend server details. These options are the same as those you configure when you define a service connection:
In Server Identification, under Instance
URL, change the modifiable portion (the part that isn't
grayed out) of the instance URL or the description.
In Headers, under Custom Headers, use
+ Add Header to add static headers that are
passed from the browser to the service (for example, a
REST-Framework-Version header).
In Security, under Authentication for logged-in
users, click Override security
to select a different authentication mechanism.
Click Save when you're done making changes.
Click the Source tab to view the contents of the
services/self/catalog.json at the extension level. Edit
the file if needed.
You can also access this file under services
in the Navigator's Source View tab.