If you read the OLAP section in the release notes, you will see SQL Developer provides this OLAP support for Oracle Database 12c Release 1 (22.214.171.124.0) or higher:
The OLAP Option node should appear in the Connections navigator tree for a 12c connection. You can also verify in Tools > Features > Database that the OLAP feature's box is checked.
SQL Developer Team
Thank you. I am using Oracle 11g R2, so I will need to use the Analytic Workspace Manager.