You can find contract positions reports by clicking "Reporting" on the top menu, and then "Contract positions" on the grey menu under it. You can adjust the parameters and filter to find very specific reports. You can also see the details for individual reports by clicking "Show details."

What is shown here? 

The contract positions sections displays contracts that shippers concluded with their TSOs. Respectively, you can only see the section when you are logged in as a user. Since today the contracts are created in the TSO system after capacity had been obtained on the platform they need to be uploaded by the TSO in order to provide them to the shipper. The upload is done via Interface 10. You can find it under "contract data" in Inubit(Fachlog).