How do I get portal access and the ‘shared secret’?

How do I get portal access and the ‘shared secret’?

 The Shared Secret Unit processes eManifest Portal shared secret code requests from carriers, freight forwarders, brokers, importers and warehouse operators. Here is the website link for more information on what is needed from the freight forwarder to receive a shared secret code: http://www.cbsa-asfc.gc.ca/prog/manif/secret-eng.html