Tutorial:Adding a BioBrick Composite Part - Step 7
and that's it! It's really that easy. You're now free to edit the pages via the wiki interface and expand and arrange your part/device page. More information can be found at Editing a BioBrick. You should be looking at the part's "hard information" page as below:
Of particular interest is the Sequences and Features section, which in the case of a composite part, shows the individual BioBricks that make up the composite part. These are directly linked to the individual BioBrick pages so its easy to find specific information about the basic parts.