Hover with your mouse over the Connectors tree node in the service panel. Click the pencil icon to create a new connector.
The Manage Connectors dialog is displayed.
Select a type of connector from the dropdown list.
Configure the connector in the Configuration section, e.g. OpenAPI (REST) connectors can be configured by simply importing a YAML description file.
Find more information about connector configuration on:
When everything is configured to your needs, click Save.
The connector, his types and interfaces, have been added to your service with the given configuration.