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1. Create a new Customer (connected as sysadmin)

In the same window we can modify the customer's rights: 

      - Open Access    = full access to the customer 

      - Access Locked = all accesses are locked for the customer 

2. Create a new Project (connected as sysadmin)

In order to upgrade a system, you must create a project. A project is used for a single iteration of an upgrade process. If you have to upgrade 3 systems (test, dev, prod) you have to create 3 projects. 

From "Product" Choose "Upgrade Assistant for Release 12" in order to create an upgrade (from 11i to R12) project. Click on "More Details".

Choose the "Source Version", "Destination Version", the remote EOF_HOME (only the name of the directory; do NOT put the full path here! ) and "Copy Steps from ..." Master. Press "Add" button. 

Now the project is created and some proprieties can be still modified. 

3. Create a new User (connected as sysadmin)

The user information can be changed from the "Edit User" tab. 

4. Create a Project Administrator (connected as sysadmin)

5. Register the nodes for the Project (connected as Project Administrator; in my case p1admin)

6. Assigning Responsibilities to "Engineers"

More information about  this subject ( Prepare the Maintenance Wizard for the Upgrade ) you can get from  www.in-oracle.com