You require to import the connector from the Application Connector Catalog into Administration Console to configure the connector and create an appmark.
To access a connector through Administration Console:
Log in to Administration Console, then click Administration Tasks > Applications > + (plus sign).
Click Add Application from Catalog to import the predefined connector of a specific applications
Or,
Click Add Application from Local Catalog. Local catalog contains connectors that have been placed there by importing a connector from the public catalog or from a file, or by using the Publish option from connector studio.
Browse or search through the catalog, then select the appropriate connector.
Configure the connector.
For information about Single Sign-On Assistant connectors, see Section 3.0, Single Sign-On Assistant Connectors.
For information about SAML 2.0 connectors, see Section 5.0, SAML Connectors.
For information about SAML/Account Management connectors, see SAML/Account Management Connectors.
For information about WS Federation Connectors, see Section 8.0, Configuring the Applications for Office 365 Using WS Federation and WS-Trust.
For information about custom connector, see Custom Connectors.